Connect
MJA
MJA

Implementing change: evaluating the Accelerated Chest pain Risk Evaluation (ACRE) project

William A Parsonage, Tanya Milburn, Sarah Ashover, Wade Skoien, Jaimi H Greenslade, Louise McCormack and Louise Cullen
Med J Aust 2017; 207 (5): . || doi: 10.5694/mja16.01479
Published online: 4 September 2017

Abstract

Objective: To evaluate hospital length of stay (LOS) and admission rates before and after implementation of an evidence-based, accelerated diagnostic protocol (ADP) for patients presenting to emergency departments (EDs) with chest pain.

Design: Quasi-experimental design, with interrupted time series analysis for the period October 2013 – November 2015.

Setting, participants: Adults presenting with chest pain to EDs of 16 public hospitals in Queensland.

Intervention: Implementation of the ADP by structured clinical re-design.

Main outcome measures: Primary outcome: hospital LOS. Secondary outcomes: ED LOS, hospital admission rate, proportion of patients identified as being at low risk of an acute coronary syndrome (ACS).

Results: Outcomes were recorded for 30 769 patients presenting before and 23 699 presenting after implementation of the ADP. Following implementation, 21.3% of patients were identified by the ADP as being at low risk for an ACS. Following implementation of the ADP, mean hospital LOS fell from 57.7 to 47.3 hours (rate ratio [RR], 0.82; 95% CI, 0.74–0.91) and mean ED LOS for all patients presenting with chest pain fell from 292 to 256 minutes (RR, 0.80; 95% CI, 0.72–0.89). The hospital admission rate fell from 68.3% (95% CI, 59.3–78.5%) to 54.9% (95% CI, 44.7–67.6%; P < 0.01). The estimated release in financial capacity amounted to $2.3 million as the result of reduced ED LOS and $11.2 million through fewer hospital admissions.

Conclusions: Implementing an evidence-based ADP for assessing patients with chest pain was feasible across a range of hospital types, and achieved a substantial release of health service capacity through reductions in hospital admissions and ED LOS.

Please login with your free MJA account to view this article in full


Please note: institutional and Research4Life access to the MJA is now provided through Wiley Online Library.


  • 1 Royal Brisbane and Women's Hospital, Brisbane, QLD
  • 2 Queensland University of Technology, Brisbane, QLD
  • 3 The University of Queensland, Brisbane, QLD


Correspondence: w.parsonage@mac.com

Acknowledgements: 

The ACRE Project was funded by the Queensland Government Department of Health. We acknowledge the support of the Healthcare Improvement Unit, Queensland Department of Health. We thank the Queensland Research Linkage Group of the Department of Health for assistance with linking data from the emergency department and inpatient datasets. We also gratefully acknowledge the contributions of former project officers Jennifer Bilesky, Jo Sippel and Vandana Bettens in the early development of the project, and the staff of the participating hospitals.

Competing interests:

No relevant disclosures.

  • 1. Australian Institute of Health and Welfare. Emergency department care 2015–16: Australian hospital statistics (AIHW Cat. No. HSE 182; Health Services Series No. 72). Canberra: AIHW, 2016.
  • 2. Cullen L, Greenslade J, Hammett CJ, et al. Comparison of three risk stratification rules for predicting patients with acute coronary syndrome presenting to an Australian emergency department. Heart Lung Circ 2013; 22: 844-851.
  • 3. Aroney CN, Aylward P, Kelly A, et al. Guidelines for the management of acute coronary syndromes. Med J Aust 2006; 184 (8 Suppl): S1-S29. <MJA full text>
  • 4. Cullen L, Greenslade J, Merollini K, et al. Cost and outcomes of assessing patients with chest pain in an Australian emergency department. Med J Aust 2015; 202: 427-432. <MJA full text>
  • 5. Than M, Cullen L, Aldous S, et al. A 2-hour accelerated diagnostic protocol to assess patients with chest pain symptoms using contemporary troponins as the only biomarker (ADAPT). J Am Coll Cardiol 2012; 59: 2091-2098.
  • 6. George T, Ashover S, Cullen L, et al. Introduction of an accelerated diagnostic protocol in the assessment of emergency department patients with possible acute coronary syndrome: the Nambour Short Low-Intermediate Chest pain project. Emerg Med Australas 2013; 25: 340-344.
  • 7. Mahler SA, Miller CD, Litt HI, et al. Performance of the 2-hour accelerated diagnostic protocol within the American College of Radiology Imaging Network PA 4005 cohort. Acad Emerg Med 2015; 22: 452-460.
  • 8. Than M, Pickering J, Aldous S, et al. Effectiveness of EDACS versus ADAPT accelerated diagnostic pathways for chest pain: a pragmatic randomized controlled trial embedded within practice. Ann Emerg Med 2016; 68: 93-102.
  • 9. Skoien W, Page K, Parsonage W, et al. Use of the theoretical domains framework to evaluate factors driving successful implementation of the Accelerated Chest pain Risk Evaluation (ACRE) project. Implement Sci 2016; 11: 136.
  • 10. Mahler SA, Riley RF, Hiestand BC, et al. The HEART Pathway randomized trial: identifying emergency department patients with acute chest pain for early discharge. Circ Cardiovasc Qual Outcomes 2015; 8: 195-203.
  • 11. Mahler SA, Miller CD, Litt HI, et al. Performance of the 2-hour Accelerated Diagnostic Protocol within the American College of Radiology Imaging Network PA 4005 cohort. Acad Emerg Med 2015; 22: 452-460.
  • 12. Morris ZS, Wooding S, Grant J. The answer is 17 years, what is the question: understanding time lags in translational research. J R Soc Med 2011; 104: 510-520.
  • 13. Chew DP, Scott IA, Cullen L, et al. National Heart Foundation of Australia and Cardiac Society of Australia and New Zealand: Australian clinical guidelines for the management of acute coronary syndromes 2016. Med J Aust 2016; 205: 128-133. <MJA full text>
  • 14. Fanaroff AC, Schulteis RD, Pieper KS, et al. Simplified predictive instrument to rule out acute coronary syndromes in a high-risk population. J Am Heart Assoc 2015; 4: e002351.
  • 15. Roffi M, Patrono C, Collet JP, et al. Task Force for the Management of Acute Coronary Syndromes in Patients Presenting without Persistent ST-Segment Elevation of the European Society of Cardiology (ESC). 2015 ESC guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation. Eur Heart J 2016; 37: 267-315.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Statistical and clinical significance

Ian A Scott
Med J Aust 2017; 207 (5): . || doi: 10.5694/mja16.01148
Published online: 4 September 2017

In published research, a statistically significant result is often wrongly interpreted as representing a clinically important finding. In this article, we explore the meanings of statistical and clinical significance.


  • 1 Princess Alexandra Hospital, Brisbane, QLD
  • 2 University of Queensland, Brisbane, QLD


Correspondence: ian.scott@health.qld.gov.au

Competing interests:

No relevant disclosures.

  • 1. Jones MP, Beath A, Oldmeadow C, Attia JR. Understanding statistical hypothesis tests and power. Med J Aust 2017; 207: 148-150. <MJA full text>
  • 2. Akobeng AK. Understanding type I and type II errors, statistical power and sample size. Acta Paediatr 2016; 105: 605-609.
  • 3. Furukawa TA, Scott IA, Guyatt G. Chapter 12.5: Measuring patients’ experience. In: Guyatt G, Rennie D, Meade MO, Cook DJ, editors. Users’ guides to the medical literature. A manual for evidence-based practice. 3rd ed. Boston: JAMA Press, 2015: pp. 219-234.
  • 4. Pocock SJ, Ware JH. Translating statistical findings into plain English. Lancet 2009; 373: 1926-1928.
  • 5. Gardner MJ, Altman DG. Confidence intervals rather than P values: estimation rather than hypothesis testing. BMJ 1986; 292: 746-750.
  • 6. Pocock SJ, Stone GW. The primary outcome is positive – is that good enough? N Engl J Med 2016; 375: 971-979.
  • 7. Pocock J, Stone GW. The primary outcome fails – what next? N Engl J Med 2016; 375: 861-870.
  • 8. Montori VM, Devereaux PJ, Adhikari NK, et al. Randomized trials stopped early for benefit: a systematic review. JAMA 2005; 294: 2203-2209.
  • 9. Mulla SM, Scott IA, Jackevicius CA, et al. User’s guide to the medical literature. How to use a non-inferiority trial. JAMA 2012; 308: 2605-2611.
  • 10. Seruga B, Templeton AJ, Badillo FE, et al. Under-reporting of harm in clinical trials. Lancet Oncol 2016; 17: e209-e219.
  • 11. Liao JM, Stack CB, Griswold ME, Localio AR. Understanding clinical research: intention to treat analysis. Ann Intern Med 2017; 166: 662-664.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Improving the safety of breast implants: implant-associated lymphoma

Ingrid Hopper, Susannah Ahern, John J McNeil, Anand K Deva, Elisabeth Elder, Colin Moore and Rodney Cooter
Med J Aust 2017; 207 (5): . || doi: 10.5694/mja17.00005
Published online: 28 August 2017

A likely causal link between breast implants and lymphoma highlights the importance of a prospective registry

Breast devices, including implants and tissue expanders, are classified as class III (high risk) medical devices by the Therapeutic Goods Administration, and are subject to the highest level of regulatory control. They have been associated with highly publicised health scares in the past, particularly, the Poly Implant Prothèse crisis.1 More recently, breast implants have again created national concern, with the Therapeutic Goods Administration confirming in late 2016 that there were 46 reports of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) in Australia, including three cases that resulted in death. This number has since increased to 53.2 Most breast implants are used in young women and in women who have had breast cancer, thus long term exposure to these devices can be anticipated. It is therefore imperative to identify serious adverse effects at the earliest opportunity. The Australian Breast Device Registry is ideally positioned to do this, but it requires sufficient resources and engagement to ensure that it remains fit for purpose.


  • 1 Monash University, Melbourne, VIC
  • 2 University of Melbourne, Melbourne, VIC
  • 3 Macquarie University, Sydney, NSW
  • 4 Integrated Specialist Healthcare, Sydney, NSW
  • 5 Westmead Breast Cancer Institute, Sydney, NSW
  • 6 Breast Surgeons of Australia and New Zealand, Sydney, NSW
  • 7 Australasian College of Cosmetic Surgery, Sydney, NSW
  • 8 Australasian Foundation for Plastic Surgery, Sydney, NSW


Correspondence: Ingrid.Hopper@monash.edu

Acknowledgements: 

The Department of Health provides funding for the Australian Breast Device Registry. Ingrid Hopper is supported by a National Health and Medical Research Council early career fellowship.

Competing interests:

No relevant disclosures.

  • 1. Jeeves AE, Cooter RD. Transforming Australia’s Breast Implant Registry. Med J Aust 2012; 196: 232-234. <MJA full text>
  • 2. Therapeutic Goods Administration. Breast implants and anaplastic large cell lymphoma. https://www.tga.gov.au/alert/breast-implants (accessed July 2017).
  • 3. Brody GS, Deapen D, Taylor CR, et al. Anaplastic large cell lymphoma occurring in women with breast implants: analysis of 173 cases. Plast Reconstr Surg 2015; 135: 695-705.
  • 4. Prince HM, Johnstone R. Commentary on: biomarkers provide clues to early events in the pathogenesis of breast implant-associated anaplastic large cell lymphoma. Aesthet Surg J 2016; 36: 782-783.
  • 5. Loch-Wilkison A, Beath K, Knight RJW, et al. Breast implant associated anaplastic large cell lymphoma in Australia and New Zealand – high surface area textured implants are associated with increased risk. Plast Reconstr Surg 2017; doi: 10.1097/PRS.0000000000003654 [Epub ahead of print].
  • 6. Collis N, Coleman D, Foo IT, Sharpe DT. Ten-year review of a prospective randomized controlled trial of textured versus smooth subglandular silicone gel breast implants. Plast Reconstr Surg 2000; 106: 786-791.
  • 7. Jacombs A, Tahir S, Hu H, et al. In vitro and in vivo investigation of the influence of implant surface on the formation of bacterial biofilm in mammary implants. Plast Reconstr Surg 2014; 133: 471e-480e.
  • 8. Hu H, Jacombs A, Vickery K, et al. Chronic biofilm infection in breast implants is associated with an increased T-cell lymphocytic infiltrate: implications for breast implant-associated lymphoma. Plast Reconstr Surg 2015; 135: 319-329.
  • 9. Blombery P, Thompson ER, Jones K, et al. Whole exome sequencing reveals activating JAK1 and STAT3 mutations in breast-implant associated anaplastic large cell lymphoma. Haematologica 2016; 10: e387-e390.
  • 10. Hopper I, Ahern S, Best RL, et al. Australian Breast Device Registry: breast device safety transformed. ANZ J Surg 2017; 87: 9-10.
  • 11. Deva AK, Adams WP, Vickery K. The role of bacterial biofilms in device-associated infection. Plast Reconstr Surg 2013; 132: 1319-1328.
  • 12. de Steiger RN, Hang JR, Miller LN, et al. Five-year results of the ASR XL Acetabular System and the ASR Hip Resurfacing System: an analysis from the Australian Orthopaedic Association National Joint Replacement Registry. J Bone Joint Surg Am 2011; 93: 2287-2293.
  • 13. van der Veer SN, de Keizer NF, Ravelli AC, et al. Improving quality of care. A systematic review on how medical registries provide information feedback to health care providers. Int J Med Inform 2010; 79: 305-323.
  • 14. Sedrakyan A, Campbell B, Graves S, Cronenwett JL. Surgical registries for advancing quality and device surveillance. Lancet 2016; 388: 1358-1360.
  • 15. Cooter RD, Barker S, Carroll SM, et al. International importance of robust breast device registries. Plast Reconstr Surg 2015; 135: 330-336.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Coeliac disease: review of diagnosis and management

Marjorie M Walker, Jonas F Ludvigsson and David S Sanders
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja16.00788
Published online: 21 August 2017

Summary

 

  • Coeliac disease is an immune-mediated systemic disease triggered by exposure to gluten, and manifested by small intestinal enteropathy and gastrointestinal and extra-intestinal symptoms. Recent guidelines recommend a concerted use of clear definitions of the disease.
  • In Australia, the most recent estimated prevalence is 1.2% in adult men (1:86) and 1.9% in adult women (1:52). Active case finding is appropriate to diagnose coeliac disease in high risk groups. Diagnosis of coeliac disease is important to prevent nutritional deficiency and long term risk of gastrointestinal malignancy.
  • The diagnosis of coeliac disease depends on clinico-pathological correlation: history, presence of antitransglutaminase antibodies, and characteristic histological features on duodenal biopsy (when the patient is on a gluten-containing diet). Human leucocyte antigen class II haplotypes DQ2 or DQ8 are found in nearly all patients with coeliac disease, but are highly prevalent in the general population at large (56% in Australia) and testing can only exclude coeliac disease for individuals with non-permissive haplotypes.
  • Adhering to a gluten free diet allows duodenal mucosal healing and alleviates symptoms. Patients should be followed up with a yearly review of dietary adherence and a health check.
  • Non-coeliac gluten or wheat protein sensitivity is a syndrome characterised by both gastrointestinal and extra-intestinal symptoms related to the ingestion of gluten and possibly other wheat proteins in people who do not have coeliac disease or wheat allergy recognised by diagnostic tests.

 


  • 1 University of Newcastle, Newcastle, NSW
  • 2 Karolinksa Institutet, Stockholm, Sweden
  • 3 Royal Hallamshire Hospital, Sheffield, United Kingdom



Competing interests:

No relevant disclosures.

  • 1. Ludvigsson JF, Leffler DA, Bai JC, et al. The Oslo definitions for coeliac disease and related terms. Gut 2013; 62: 43-52.
  • 2. Marsh MN. Gluten, major histocompatibility complex, and the small intestine. A molecular and immunobiologic approach to the spectrum of gluten sensitivity (‘celiac sprue’). Gastroenterology 1992; 102: 330-354.
  • 3. Husby S, Koletzko S, Korponay-Szabo IR, et al. European Society for Pediatric Gastroenterology, Hepatology, and Nutrition guidelines for the diagnosis of coeliac disease. J Pediatr Gastroenterol Nutr 2012; 54: 136-160.
  • 4. Rubio-Tapia A, Hill ID, Kelly CP, et al. ACG clinical guidelines: diagnosis and management of celiac disease. Am J Gastroenterol 2013; 108: 656-676.
  • 5. Bai JC, Fried M, Corazza GR, et al. World Gastroenterology Organisation global guidelines on celiac disease. J Clin Gastroenterol 2013; 47: 121-126.
  • 6. Ludvigsson JF, Bai JC, Biagi F, et al. Diagnosis and management of adult coeliac disease: guidelines from the British Society of Gastroenterology. Gut 2014; 63: 1210-1228.
  • 7. Makharia GK, Mulder CJ, Goh KL, et al. Issues associated with the emergence of coeliac disease in the Asia-Pacific region: a working party report of the World Gastroenterology Organization and the Asian Pacific Association of Gastroenterology. J Gastroenterol Hepatol 2014; 29: 666-677.
  • 8. National Institute for Health and Clinical Excellence. Coeliac disease: recognition, assessment and management. London: NICE; 2015. https://www.nice.org.uk/guidance/ng20/resources/coeliac-disease-recognition-assessment-and-management-pdf-1837325178565 (accessed June 2017).
  • 9. Ludvigsson JF, Agreus L, Ciacci C, et al. Transition from childhood to adulthood in coeliac disease: the Prague consensus report. Gut 2016; 65: 1242-1251.
  • 10. Anderson RP, Henry MJ, Taylor R, et al. A novel serogenetic approach determines the community prevalence of celiac disease and informs improved diagnostic pathways. BMC Med 2013; 11: 188.
  • 11. Cook HB, Burt MJ, Collett JA, et al. Adult coeliac disease: prevalence and clinical significance. J Gastroenterol Hepatol 2000; 15: 1032-1036.
  • 12. Ludvigsson JF, Card TR, Kaukinen K, et al. Screening for celiac disease in the general population and in high-risk groups. United European Gastroenterol J 2015; 3: 106-120.
  • 13. Walker MM, Murray JA, Ronkainen J, et al. Detection of celiac disease and lymphocytic enteropathy by parallel serology and histopathology in a population-based study. Gastroenterology 2010; 139: 112-119.
  • 14. Mustalahti K, Catassi C, Reunanen A, et al. The prevalence of celiac disease in Europe: results of a centralized, international mass screening project. Ann Med 2010; 42: 587-595.
  • 15. Kang JY, Kang AH, Green A, et al. Systematic review: worldwide variation in the frequency of coeliac disease and changes over time. Aliment Pharmacol Ther 2013; 38: 226-245.
  • 16. Tortora R, Zingone F, Rispo A, et al. Coeliac disease in the elderly in a tertiary centre. Scand J Gastroenterol 2016; 51: 1179-1183.
  • 17. Anderson RP. Coeliac disease is on the rise. Med J Aust 2011; 194: 278-279. <MJA full text>
  • 18. Volta U, Caio G, Giancola F, et al. Features and progression of potential celiac disease in adults. Clin Gastroenterol Hepatol 2016; 14: 686-693.e1.
  • 19. Singh P, Arora S, Lal S, et al. Risk of celiac disease in the first- and second-degree relatives of patients with celiac disease: a systematic review and meta-analysis. Am J Gastroenterol 2015; 110: 1539-1548.
  • 20. Costa Gomes R, Cerqueira Maia J, Fernando Arrais R, et al. The celiac iceberg: from the clinical spectrum to serology and histopathology in children and adolescents with type 1 diabetes mellitus and Down syndrome. Scand J Gastroenterol 2016; 51: 178-185.
  • 21. Tio M, Cox MR, Eslick GD. Meta-analysis: coeliac disease and the risk of all-cause mortality, any malignancy and lymphoid malignancy. Aliment Pharmacol Ther 2012; 35: 540-551.
  • 22. Leffler D, Vanga R, Mukherjee R. Mild enteropathy celiac disease: a wolf in sheep’s clothing? Clin Gastroenterol Hepatol 2013; 11: 259-261.
  • 23. West J, Logan RF, Card TR, et al. Fracture risk in people with celiac disease: a population-based cohort study. Gastroenterology 2003; 125: 429-436.
  • 24. Ludvigsson JF, Michaelsson K, Ekbom A, Montgomery SM. Coeliac disease and the risk of fractures - a general population-based cohort study. Aliment Pharmacol Ther 2007; 25: 273-285.
  • 25. Eigner W, Bashir K, Primas C, et al. Dynamics of occurrence of refractory coeliac disease and associated complications over 25 years. Aliment Pharmacol Ther 2017; 45: 364-372.
  • 26. Szajewska H, Shamir R, Mearin L, et al. Gluten introduction and the risk of coeliac disease: a position paper by the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition. J Pediatr Gastroenterol Nutr 2016; 62: 507-513.
  • 27. Lebwohl B, Murray JA, Verdu EF, et al. Gluten introduction, breastfeeding, and celiac disease: back to the drawing board. Am J Gastroenterol 2016; 111: 12-14.
  • 28. Abadie V, Sollid LM, Barreiro LB, Jabri B. Integration of genetic and immunological insights into a model of celiac disease pathogenesis. Annu Rev Immunol 2011; 29: 493-525.
  • 29. Tye-Din JA, Cameron DJ, Daveson AJ, et al. Appropriate clinical use of human leukocyte antigen typing for coeliac disease: an Australasian perspective. Intern Med J 2015; 45: 441-450.
  • 30. Oxentenko AS, Murray JA. Celiac disease: ten things that every gastroenterologist should know. Clin Gastroenterol Hepatol 2015; 13: 1396-1404; quiz e127-e129.
  • 31. Mooney PD, Kurien M, Evans KE, et al. Clinical and immunologic features of ultra-short celiac disease. Gastroenterology 2016; 150: 1125-1134.
  • 32. Oberhuber G. Histopathology of celiac disease. Biomed Pharmacother 2000; 54: 368-372.
  • 33. Corazza GR, Villanacci V, Zambelli C, et al. Comparison of the interobserver reproducibility with different histologic criteria used in celiac disease. Clin Gastroenterol Hepatol 2007; 5: 838-843.
  • 34. Aziz I, Evans KE, Hopper AD, et al. A prospective study into the aetiology of lymphocytic duodenosis. Aliment Pharmacol Ther 2010; 32: 1392-1397.
  • 35. Marietta EV, Nadeau AM, Cartee AK, et al. Immunopathogenesis of olmesartan-associated enteropathy. Aliment Pharmacol Ther 2015; 42: 1303-1314.
  • 36. Leffler D, Schuppan D, Pallav K, et al. Kinetics of the histological, serological and symptomatic responses to gluten challenge in adults with coeliac disease. Gut 2013; 62: 996-1004.
  • 37. La Vieille S, Pulido OM, Abbott M, et al. Celiac disease and gluten-free oats: a Canadian position based on a literature review. Can J Gastroenterol Hepatol 2016; 2016: 1870305.
  • 38. Food Standards Australia New Zealand. Review of gluten claims with specific reference to oats and malt: final assessment report, proposal P264. Canberra: FSANZ; 2004.
  • 39. Ludvigsson JF, Montgomery SM, Ekbom A, et al. Small-intestinal histopathology and mortality risk in celiac disease. JAMA 2009; 302: 1171-1178.
  • 40. Ludvigsson JF. Mortality and malignancy in celiac disease. Gastrointest Endosc Clin N Am 2012; 22: 705-722.
  • 41. Lebwohl B, Granath F, Ekbom A, et al. Mucosal healing and risk for lymphoproliferative malignancy in celiac disease: a population-based cohort study. Ann Intern Med 2013; 159: 169-175.
  • 42. Elfstrom P, Granath F, Ye W, Ludvigsson JF. Low risk of gastrointestinal cancer among patients with celiac disease, inflammation, or latent celiac disease. Clin Gastroenterol Hepatol 2012; 10: 30-36.
  • 43. Ludvigsson JF, West J, Ekbom A, Stephansson O. Reduced risk of breast, endometrial and ovarian cancer in women with celiac disease. Int J Cancer 2012; 131: E244-E250.
  • 44. Wahab PJ, Meijer JW, Mulder CJ. Histologic follow-up of people with celiac disease on a gluten-free diet: slow and incomplete recovery. Am J Clin Pathol 2002; 118: 459-463.
  • 45. Newnham ED, Shepherd SJ, Strauss BJ, et al. Adherence to the gluten-free diet can achieve the therapeutic goals in almost all patients with coeliac disease: A 5-year longitudinal study from diagnosis. J Gastroenterol Hepatol 2016; 31: 342-349.
  • 46. Mooney PD, Evans KE, Singh S, Sanders DS. Treatment failure in coeliac disease: a practical guide to investigation and treatment of non-responsive and refractory coeliac disease. J Gastrointestin Liver Dis 2012; 21: 197-203.
  • 47. Ilus T, Kaukinen K, Virta LJ, et al. Refractory coeliac disease in a country with a high prevalence of clinically-diagnosed coeliac disease. Aliment Pharmacol Ther 2014; 39: 418-425.
  • 48. van Gils T, Nijeboer P, van Wanrooij RL, et al. Mechanisms and management of refractory coeliac disease. Nat Rev Gastroenterol Hepatol 2015; 12: 572-579.
  • 49. Catassi C, Elli L, Bonaz B, et al. Diagnosis of non-celiac gluten sensitivity (NCGS): the Salerno experts’ criteria. Nutrients 2015; 7: 4966-4977.
  • 50. Sapone A, Bai JC, Ciacci C, et al. Spectrum of gluten-related disorders: consensus on new nomenclature and classification. BMC Med 2012; 10: 13.
  • 51. Lebwohl B, Ludvigsson JF, Green PH. Celiac disease and non-celiac gluten sensitivity. BMJ 2015; 351: h4347.
  • 52. De Giorgio R, Volta U, Gibson PR. Sensitivity to wheat, gluten and FODMAPs in IBS: facts or fiction? Gut 2015; 65: 169-178.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Opting for rural practice: the influence of medical student origin, intention and immersion experience

Denese Playford, Hanh Ngo, Surabhi Gupta and Ian B Puddey
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja16.01322
Published online: 21 August 2017

Abstract

Objective: To compare the influence of rural background, rural intent at medical school entry, and Rural Clinical School (RCS) participation on the likelihood of later participation in rural practice.

Design: Analysis of linked data from the Medical School Outcomes Database Commencing Medical Students Questionnaire (CMSQ), routinely collected demographic information, and the Australian Health Practitioner Regulation Agency database on practice location.

Setting and participants: University of Western Australia medical students who completed the CMSQ during 2006–2010 and were practising medicine in 2016.

Main outcome measures: Medical practice in rural areas (ASGC-RAs 2–5) during postgraduate years 2–5.

Results: Full data were available for 508 eligible medical graduates. Rural background (OR, 3.91; 95% CI, 2.12–7.21; P < 0.001) and experience in an RCS (OR, 1.93; 95% CI, 1.05–3.54; P = 0.034) were significant predictors of rural practice in the multivariate analysis of all potential factors. When interactions between intention, origin, and RCS experience were included, RCS participation significantly increased the likelihood of graduates with an initial rural intention practising in a rural location (OR, 3.57; 95% CI, 1.25–10.2; P = 0.017). The effect of RCS participation was not significant if there was no pre-existing intention to practise rurally (OR, 1.38; 95% CI, 0.61–3.16; P = 0.44).

Conclusion: For students who entered medical school with the intention to later work in a rural location, RCS experience was the deciding factor for realising this intention. Background, intent and RCS participation should all be considered if medical schools are to increase the proportion of graduates working rurally.

Please login with your free MJA account to view this article in full


Please note: institutional and Research4Life access to the MJA is now provided through Wiley Online Library.


  • 1 The Rural Clinical School of Western Australia, University of Western Australia, Perth, WA
  • 2 University of Western Australia, Perth, WA


Correspondence: denese.playford@uwa.edu.au

Acknowledgements: 

We acknowledge the statistical advice of Sharon Evans, senior biostatistician, and the support of David Atkinson, head of the Rural Clinical School of Western Australia.

Competing interests:

No relevant disclosures.

  • 1. Rabinowitz H, Diamond J, Markham F, et al. The relationship between entering medical students’ backgrounds and career plans and their rural practice outcomes three decades later. Acad Med 2012; 87: 493-497.
  • 2. Clark T, Freedman SB, Croft AJ, et al. Medical graduates becoming rural doctors: rural background versus extended rural placement. Med J Aust 2013; 199: 779-782. <MJA full text>
  • 3. Playford D, Evans S, Atkinson D, et al. Impact of the Rural Clinical School of Western Australia on work location of medical graduates. Med J Aust 2014; 200: 104-107. <MJA full text>
  • 4. Kondalsamy-Chennakesavan S, Eley DS, Ranmuthugal G, et al. Determinants of rural practice: positive interaction between rural background and rural undergraduate training. Med J Aust 2015; 202: 41-45. <MJA full text>
  • 5. Playford DE, Puddey IB. Interest in Rural Clinical School is not enough: participation is necessary to predict an ultimate rural practice location. Aust J Rural Health 2016; doi: http://dx.doi.org/10.1111/ajr.12324 [Epub ahead of print].
  • 6. Jones M, Humphreys J, Prideaux D. Predicting medical students’ intentions to take up rural practice after graduation. Med Educ 2009; 43: 1001-1009.
  • 7. Herd MS, Bulsara MK, Jones MP, et al. Preferred practice location at medical school commencement strongly determines graduates’ rural preferences and work locations. Aust J Rural Health 2016; 25: 15-21.
  • 8. Australian Bureau of Statistics. 1216.0 Australian Standard Geographical Classification (ASGC), Jul 2008. Updated Sept 2009. http://www.abs.gov.au/AUSSTATS/abs@.nsf/DetailsPage/1216.0Jul%202008?OpenDocument (accessed Feb 2016).
  • 9. Worley P, Couper I, Strasser R, et al; Consortium of Longitudinal Integrated Clerkships (CLIC) Research Collaborative. A typology of longitudinal integrated clerkships. Med Educ 2016; 50: 922-932.
  • 10. Puddey IB, Mercer A, Playford DE, Riley GJ. Medical student selection criteria and socio-demographic factors as predictors of ultimately working rurally after graduation. BMC Med Educ 2015; 15: 74.
  • 11. Australian Government, Department of Health. Rural Health Multidisciplinary Training (RHMT) 2016-2018 — Programme Framework. http://www.health.gov.au/internet/main/publishing.nsf/content/rural-health-multidisciplinary-training-program-framework (accessed Feb 2017).
  • 12. Australian Bureau of Statistics. 2039.0. 2039. Information paper: an introduction to Socio-Economic Indexes for Areas (SEIFA), 2006. Updated Mar 2009. http://www.abs.gov.au/AUSSTATS/abs@.nsf/Lookup/2039.0Main+Features12006?OpenDocument (accessed Feb 2017).
  • 13. Australian Bureau of Statistics. 1269.0. Standard Australian Classification of Countries (SACC), 2011. Updated May 2015. http://www.abs.gov.au/ausstats/abs@.nsf/Lookup/1269.0main+features102011 (accessed Feb 2016).
  • 14. Australian Government, Department of Health. Rural classification reform: frequently asked questions [webpage]. DoctorConnect; no date. http://www.doctorconnect.gov.au/internet/otd/publishing.nsf/Content/Classification-changes (accessed June 2017).
  • 15. Walters L, Greenhill J, Richards J, et al. Outcomes of longitudinal integrated clinical placements for students, clinicians and society. Med Educ 2012; 46: 1028-1041.
  • 16. Deloitte Access Economics. Review of the rural medical workforce distribution programs and policies. Report for the Department of Health and Ageing; Aug 2011. https://www.health.gov.au/internet/main/publishing.nsf/Content/foi-disc-log-2011-12/$File/FOI%20235-1011%20document%201.pdf (accessed Mar 2017).
  • 17. Jones M, Humphreys JS, McGrail MR. Why does a rural background make medical students more likely to intend to work in rural areas and how consistent is the effect? A study of the rural background effect. Aust J Rural Health 2012; 20: 29-34.
  • 18. Larkins S, Michielsen K, Iputo J, et al. Impact of selection strategies on representation of underserved populations and intention to practise: international findings. Med Educ 2015; 49: 60-72.
  • 19. Odom Walker K, Ryan G, Ramey R, et al. Recruiting and retaining primary care physicians in urban underserved communities: the importance of having a mission to serve. Am J Public Health 2010; 100: 2168-2175.
  • 20. Tiffin PA, Dowell JS, McLachlan JC. Widening access to UK medical education for under-represented socioeconomic groups: modelling the impact of the UKCAT in the 2009 cohort. BMJ 2012; 344: e1805.
  • 21. Rabinowitz HK, Diamond JJ, Veloski JJ, et al. The impact of multiple predictors on generalist physicians’ care of underserved populations. Am J Public Health 2000; 9: 1225-1228.
  • 22. Playford D, Ng W, Burkitt T. Redistributing the medical workforce: creation of a mobile rural workforce following undergraduate longitudinal rural immersion. Med Teach 2016; 38: 498-503.
  • 23. McGrail M, Russell DJ, Campbell DG. Vocational training of general practitioners in rural locations is critical for the Australian rural medical workforce. Med J Aust 2016; 205: 216-221. <MJA full text>
  • 24. Laven G, Beilby JJ, McElroy HJ, Wilkinson D. Factors associated with rural practice among Australian-trained general practitioner. Med J Aust 2003; 179: 75-79. <MJA full text>

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Digital rectal examination: indications and technique

Christopher S Pokorny
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja17.00373
Published online: 21 August 2017

Digital rectal examination (DRE) is an important component of the physical examination. It is essential when someone presents with rectal bleeding, acute abdominopelvic pain (to check for pelvic peritoneal irritation) or other symptoms suggestive of anorectal or prostatic pathology (Box 1). Indeed, in days gone by, some physicians lived by the maxim: “if you don’t put your finger in, you put your foot in it” (attributed to Hamilton Bailey, English surgeon, 1894–1961).


  • South Western Sydney Medical School, UNSW Sydney, Sydney, NSW


Correspondence: c.pokorny@unsw.edu.au

Competing interests:

No relevant disclosures.

  • 1. Tantiphlachiva K, Rao P, Attaluri A, et al. Digital rectal examination is a useful tool for identifying patients with dyssynergia. Clin Gastroenterol Hepatol 2010; 11: 955-960.
  • 2. Wong RK, Drossman DA, Bharucha AE, et al. The digital rectal examination: a multicentre survey of physicians’ and students’ perceptions and practice patterns. Am J Gastroenterol 2012; 107: 1157-1163.
  • 3. Talley NJ. How to do and interpret a rectal examination in gastroenterology. Am J Gastroenterol 2008; 103: 820-822.
  • 4. Hoepffner N, Shastri YM, Hanisch E, et al. Comparative evaluation of a new bedside faecal occult blood test in a prospective multicentre study. Aliment Pharmacol Ther 2006; 23: 145-154.
  • 5. Hoogendam A, Buntinx F, de Vet HC. The diagnostic value of digital rectal examination in primary care screening for prostate cancer: a meta-analysis. Fam Pract 1999; 16: 621.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

No smoker left behind: it’s time to tackle tobacco in Australian priority populations

Billie Bonevski, Ron Borland, Christine L Paul, Robyn L Richmond, Michael Farrell, Amanda Baker, Coral E Gartner, Sharon Lawn, David P Thomas and Natalie Walker
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja16.01425
Published online: 21 August 2017

A truly comprehensive approach to tobacco control should include interventions targeting high risk groups

Australia is a world leader in tobacco control as a result of implementing the strong tobacco control strategies in the World Health Organization Framework Convention on Tobacco Control (http://www.who.int/fctc/en). The Australian adult daily smoking prevalence is 14%1 compared with 31% in 1986,2 with a government goal to reduce this prevalence to 10% by 2020.3 Recently employed tobacco control strategies include increased taxation and plain cigarette pack legislation, supported by strong legislative, economic and community commitment to significantly reduce tobacco use in our society. These strategies motivate smokers to quit. For example, data from the 2007 National Drug Strategy Household Survey4 indicate that high cigarette prices are a key motivator to attempt to quit or reduce the number of cigarettes smoked.


  • 1 University of Newcastle, Newcastle, NSW
  • 2 Cancer Council Victoria, Melbourne, VIC
  • 3 UNSW Sydney, Sydney, NSW
  • 4 National Drug and Alcohol Research Centre, UNSW Sydney, Sydney, NSW
  • 5 University of Queensland, Brisbane, QLD
  • 6 Flinders Human Behaviour and Health Research Unit, Flinders University, Adelaide, SA
  • 7 Menzies School of Health Research, Darwin, NT
  • 8 National Institute for Health Innovation, University of Auckland, Auckland, NZ



Competing interests:

No relevant disclosures.

  • 1. Australian Institute of Health and Welfare. National Drug Strategy Household Survey detailed report, 2013 (AIHW Cat. No. PHE 183; Drug Statistics Series No. 28). Canberra: AIHW, 2014. http://aihw.gov.au/WorkArea/DownloadAsset.aspx?id=60129549848 (accessed Dec 2016).
  • 2. Greenhalgh EM, Bayly M, Winstanley MH. 1.3 Prevalence of smoking—adults. In: Scollo MM, Winstanley MH, editors. Tobacco in Australia: facts and issues. Melbourne: Cancer Council Victoria, 2015. http://www.tobaccoinaustralia.org.au/chapter-1-prevalence/1-3-prevalence-of-smoking-adults (accessed July 2017).
  • 3. Intergovernmental Committee on Drugs. National Tobacco Strategy 2012–2018. Canberra: Commonwealth of Australia, 2012. http://www.nationaldrugstrategy.gov.au/internet/drugstrategy/publishing.nsf/Content/D4E3727950BDBAE4CA257AE70003730C/$File/National%20Tobacco%20Strategy%202012-2018.pdf (accessed Dec 2016).
  • 4. Australian Institute of Health and Welfare. 2007 National Drug Strategy Household Survey: detailed findings (AIHW Cat. No. PHE 107). Canberra: AIHW, 2008. http://www.aihw.gov.au/publication-detail/?id=6442468195 (accessed Dec 2016).
  • 5. Australian Institute of Health and Welfare. Australian Burden of Disease Study: Impact and causes of illness and death in Australia 2011 (Australian Burden of Disease Study Series No. 3; BOD 4). Canberra: AIHW, 2016. http://www.aihw.gov.au/WorkArea/DownloadAsset.aspx?id=60129555176 (accessed Dec 2016).
  • 6. Australian Bureau of Statistics. National Health Survey: first results, 2014-15 (Cat. No. 4364.0.55.001). Canberra: ABS, 2016. http://www.abs.gov.au/AUSSTATS/abs@.nsf/Lookup/4364.0.55.001Main+Features100012014-15?OpenDocument (accessed Dec 2016).
  • 7. Baker AL, Ivers RG, Bowman JA, et al. Where there’s smoke, there’s fire: high prevalence of smoking among some sub-populations and recommendations for intervention. Drug Alcohol Rev 2006; 25: 85-96.
  • 8. Butler TG, Yap L. Smoking bans in prison: time for a breather? Med J Aust 2015; 203: 313. <MJA full text>
  • 9. Couzos S, Nicholson AK, Hunt JM, et al. Talking About The Smokes: a large-scale community-based participatory research project. Med J Aust 2015: 202 (10 Suppl): S13-S19. <MJA full text>
  • 10. Cooper J, Mancuso S, Borland R, et al. Tobacco smoking among people living with a psychotic illness: the second Australian survey of psychosis. Aust N Z J Psychiatry 2012; 46: 851-863.
  • 11. Malone RE. The race to a tobacco endgame. Tob Control 2016; 25: 607-608.
  • 12. Twyman L, Bonevski B, Paul C, et al. Perceived barriers to smoking cessation in selected socioeconomically disadvantaged groups: A systematic review of the qualitative and quantitative literature. BMJ Open 2014; 4: 1-15.
  • 13. Guillaumier A, Bonevski B, Paul C. Tobacco health warning messages on plain cigarette packs and in television campaigns: a qualitative study with Australian socioeconomically disadvantaged smokers. Health Educ Res 2015; 30: 57-66.
  • 14. Walters EH, Barnsley K. Tobacco-free generation legislation. Med J Aust 2015; 202: 509. <MJA full text>
  • 15. Baker AL, Richmond R, Kay-Lambkin FJ, et al. Randomized controlled trial of a healthy lifestyle intervention among smokers with psychotic disorders. Nicotine Tob Res 2015; 17: 946-954.
  • 16. Franck C, Filion KB, Kimmelman J, et al. Ethical considerations of e-cigarette use for tobacco harm reduction. Respir Res 2016; 17: 53.
  • 17. Twyman L, Bonevski B, Paul C, et al. Electronic cigarettes: awareness, recent use, and attitudes within a sample of socioeconomically disadvantaged Australian smokers. Nicotine Tob Res 2016; 18: 670-677.
  • 18. O’Brien B, Knight-West O, Walker N, et al. E-cigarettes for smoking reduction or cessation in people with mental illness: secondary analysis of data from the ASCEND trial. Tob Induc Dis 2015; 13: 5.
  • 19. Bonevski B, Guillaumier A, Shakeshaft A, et al. An organisational change intervention for increasing the delivery of smoking cessation support in addiction treatment centres: study protocol for a randomized controlled trial. Trials 2016; 17: 290.
  • 20. Ministry of Health. Health targets: better help for smokers to quit. http://www.health.govt.nz/new-zealand-health-system/health-targets/about-health-targets/health-targets-better-help-smokers-quit (accessed July 2017).

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Computed tomography colonography: underutilised in Australia

Richard M Mendelson, Tom Sutherland and Andrew Little, Abdominal Radiology Group of Australia and New Zealand
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja16.00684
Published online: 21 August 2017

CTC is a safe and accurate cancer detection technique widely used overseas but underused here

Computed tomography colonography (CTC), also known as virtual colonoscopy, is a minimally invasive method for examining the whole colon using computed tomography to acquire images after distension of the colon with air or carbon dioxide through a small rectal tube. Dedicated software enables 2D and 3D fly-through models for interpretation. No sedation is required. CTC has been used since the mid-1990s, the earliest Australian experience being in 1996–1997.1


  • 1 Royal Perth Hospital and University of Western Australia, Perth, WA
  • 2 University of Melbourne and St Vincent's Hospital, Melbourne, Vic



Acknowledgements: 

This article is written on behalf of the ARGANZ. Members of the ARGANZ are listed in the online Appendix.

Competing interests:

No relevant disclosures.

  • 1. Mendelson RM, Foster NM, Edwards JT, et al. Virtual colonoscopy compared with conventional colonoscopy: a developing technology. Med J Aust 2000; 173: 472-475.
  • 2. Pickhardt PJ, Choi JR, Hwang I, et al. Computed tomographic virtual colonoscopy to screen for colorectal neoplasia in asymptomatic adults. N Engl J Med 2003; 349: 2191-2200.
  • 3. Johnson CD. Accuracy of CT colonography for detection of large adenomas and cancers (ACRIN trial). N Engl J Med 2008; 359: 1207-1217.
  • 4. de Haan MC, Pickhardt PJ, Stoker J. CT colonography: accuracy, acceptance, safety and position in organised population screening. Gut 2015; 64: 342-350.
  • 5. Halligan S, Altman DG, Taylor SA, et al. CT colonography in the detection of colorectal polyps and cancer: systematic review, meta-analysis, and proposed minimum data set for study level reporting. Radiology 2005; 237: 893-904.
  • 6. Pickhardt PJ, Hassan C, Halligan S, Marmo R. Colorectal cancer: CT colonography and colonoscopy for detection — systematic review and meta-analysis. Radiology 2011; 259: 393-405.
  • 7. Burling D. CT colonography standards. Clin Radiol 2010; 65: 474-480.
  • 8. Zalis ME, Barish MA, Choi JR, et al. CT colonography reporting and data system: a consensus proposal. Radiology 2005; 236: 3-9.
  • 9. Neri E, Halligan S, Hellström M, et al. The second ESGAR consensus statement on CT colonography. Eur Radiol 2013; 23: 720-729.
  • 10. Halligan S, Wooldrage K, Dadswell E, et al. Computed tomographic colonography versus barium enema for diagnosis of colorectal cancer or large polyps in symptomatic patients (SIGGAR): a multicentre randomised trial. Lancet 2013; 381: 1185-1193.
  • 11. The 2007 Recommendations of the International Commission on Radiological Protection. ICRP Publication 103. Ann ICRP 2007; 37: 1-332
  • 12. Spada C, Stoker J, Alarcon O, et al. Clinical indications for computed tomographic colonography: European Society of Gastrointestinal Endoscopy (ESGE) and European Society of Gastrointestinal and Abdominal Radiology (ESGAR) Guideline. Eur Radiol 2015; 25: 331-345.
  • 13. Taylor SA, Halligan S, Saunders BP, et al. Use of multidetector-row CT colonography for detection of colorectal neoplasia in patients referred via the Department of Health “2-Week-wait” initiative. Clin Radiol 2003; 58: 855-861.
  • 14. Behrens C, Stevenson G, Eddy R, et al. The benefits of computed tomographic colonography in reducing a long colonoscopy waiting list. Can Assoc Radiol J 2010; 61: 33-40.
  • 15. Sanders AD, Stevenson C, Pearson J, et al. A novel pathway for investigation of colorectal symptoms with colonoscopy or computed tomography colonography. N Z Med J 2013; 126: 45-57.
  • 16. Pyenson B, Pickhardt PJ, Sawhney TG, Berrios M. Medicare cost of colorectal cancer screening: CT colonography vs. optical colonoscopy. Abdom Imaging 2015; 40: 2966-2976.
  • 17. Pickhardt PJ. CT colonography for population screening: ready for prime time? Dig Dis Sci 2015; 60: 647-659.
  • 18. National Institute of Health and Welfare. National Bowel Cancer Screening Program monitoring report: phase 2, July 2008–June 2011 (AIHW Cat. No. CAN 61; Cancer Series No. 65). Canberra: AIHW; 2012. http://www.aihw.gov.au/publication-detail/?id=10737421408 (accessed June 2017).

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Faecal microbiota transplantation for Clostridium difficile-associated diarrhoea: a systematic review of randomised controlled trials

Paul Moayyedi, Yuhong Yuan, Harith Baharith and Alexander C Ford
Med J Aust 2017; 207 (4): . || doi: 10.5694/mja17.00295
Published online: 14 August 2017

Abstract

Objectives: Faecal microbiota transplantation (FMT) has emerged as a useful approach for treating Clostridium difficile-associated diarrhoea (CDAD). Randomised controlled trials (RCTs) have recently evaluated its effectiveness, but systematic reviews have focused on evidence from case series. We therefore conducted a systematic review and meta-analysis of RCTs evaluating the effectiveness of FMT for treating CDAD.

Study design: We included RCTs that primarily recruited adults with CDAD and compared the effectiveness of FMT with that of placebo, antibiotic therapy, or autologous stool transplantation, or compared different preparations or modes of delivery of FMT. Dichotomous symptom data were pooled to calculate a relative risk (RR) of CDAD persisting after therapy, and the number needed to treat (NNT).

Data sources: MEDLINE, EMBASE, and the Cochrane Controlled Trials Register and Database of Systematic Reviews were searched to 6 February 2017.

Data synthesis: We identified ten RCTs that evaluated the treatment of a total of 657 patients with CDAD. Five RCTs compared FMT with placebo (including autologous FMT) or vancomycin treatment (total of 284 patients); FMT was statistically significantly more effective (RR, 0.41; 95% CI, 0.22–0.74; NNT, 3; 95% CI, 2–7). Heterogeneity across studies was significant (I2 = 61%); this heterogeneity was attributable to the mode of delivery of FMT, and to the therapy being more successful in European than in North American trials. The other five RCTs evaluated different approaches to FMT therapy. Frozen FMT preparations were as efficacious as fresh material in one RCT, but the numbers of patients in the remaining RCTs were too small to allow definitive conclusions.

Conclusions: Moderate quality evidence from RCT trials indicates that FMT is more effective in patients with CDAD than vancomycin or placebo. Further investigations are needed to determine the best route of administration and FMT preparation.

Please login with your free MJA account to view this article in full


Please note: institutional and Research4Life access to the MJA is now provided through Wiley Online Library.


  • 1 McMaster University, Hamilton, ON, Canada
  • 2 Leeds Gastroenterology Institute, St James's University Hospital, Leeds, United Kingdom
  • 3 Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, United Kingdom


Correspondence: moayyep@mcmaster.ca

Competing interests:

No relevant disclosures.

  • 1. Hall I, O’Toole E. Intestinal flora in newborn infants with a description of a new pathogenic anaerobe, Bacillus difficilis. Am J Dis Child 1935; 49: 390.
  • 2. Heinlen L, Ballard JD. Clostridium difficile infection. Am J Med Sci 2010; 340: 247-252.
  • 3. Bartlett JG. Clostridium difficile: history of its role as an enteric pathogen and the current state of knowledge about the organism. Clin Infect Dis. 1994; 18 (Suppl 4): S265-S272.
  • 4. Reveles KR, Lee GC, Boyd NK, Frei CR. The rise in Clostridium difficile infection incidence among hospitalized adults in the United States: 2001–2010. Am J Infect Control 2014; 42: 1028-1032.
  • 5. Leffler DA, Lamont JT. Clostridium difficile infection. N Engl J Med 2015; 372: 1539-1548.
  • 6. Slimings C, Armstrong P, Beckingham WD, et al. Increasing incidence of Clostridium difficile infection, Australia, 2011–2012. Med J Aust 2014; 200: 272-276. <MJA full text>
  • 7. O'Connor JR, Johnson S, Gerding DN. Clostridium difficile infection caused by the epidemic BI/NAP1/027 strain. Gastroenterology 2009; 136: 1913-1924.
  • 8. Lessa FC, Mu Y, Bamberg WM, et al. Burden of Clostridium difficile in the United States. N Engl J Med 2015; 372: 825-834.
  • 9. Zhang F, Luo W, Shi Y, et al. Should we standardize the 1700-year old fecal microbiota transplantation? Am J Gastroenterol 2012; 107: 1755.
  • 10. Borody TJ, Brandt LJ, Paramsothy S. Therapeutic faecal microbiota transplantation: current status and future developments. Curr Opin Gastroenterol 2014; 30: 97-105.
  • 11. Debast SB, Bauer MP, Kuipers EJ. European Society of Clinical Microbiology and Infectious Diseases: update of the treatment guidance document for Clostridium difficile infection. Clin Microbial Infect 2014; 20 (Suppl 2): 1-26.
  • 12. Cammarota G, Ianiro G, Tilg H, et al. European consensus conference on faecal microbiota transplantation in clinical practice. Gut 2017; 66: 569-580.
  • 13. Moayyedi P, Marshall JK, Yuan Y, Hunt R. Canadian Association of Gastroenterology position statement: fecal microbiota transplant therapy. Can J Gastroenterol Hepatol 2014; 28: 66-68.
  • 14. Cheng AC, Ferguson JK, Richards MJ, et al. Australasian Society for Infectious Diseases guidelines for the diagnosis and treatment of Clostridium difficile infection. Med J Aust 2011; 194: 353-358. <MJA full text>
  • 15. Drekonja D, Reich J, Gezahegn S, et al. Fecal microbiota transplantation for Clostridium difficile infection. a systematic review. Ann Intern Med 2015; 162: 630-638.
  • 16. Higgins JPT, Churchill R, Chandler J, Cumpston MS (editors). Cochrane handbook for systematic reviews of interventions; version 5.2 (updated Feb 2017), Cochrane, 2017. http://training.cochrane.org/ (accessed June 2017).
  • 17. DerSimonian R, Laird N. Meta-analysis in clinical trials. Control Clin Trials 1986; 7: 177-188.
  • 18. Higgins JPT, Thompson SG, Deeks JJ, Altman DG. Measuring inconsistency in meta-analyses. BMJ 2003; 327: 557-560.
  • 19. Moayyedi P. Meta-analysis: can we mix apples and oranges? Am J Gastroenterol 2004; 99: 2297-2301.
  • 20. Sterne JA, Sutton AJ, Ioannidis JP, et al. Recommendations for examining and interpreting funnel plot asymmetry in meta-analyses of randomised controlled trials. BMJ 2011; 343: d4002.
  • 21. Egger M, Davey-Smith G, Schneider M, Minder C. Bias in meta-analysis detected by a simple, graphical test. BMJ 1997; 315: 629-634.
  • 22. van Nood E, Vrieze A, Nieuwdorp M, et al. Duodenal infusion of donor feces for recurrent Clostridium difficile. N Engl J Med 2013; 368: 407-415.
  • 23. Cammarota G, Masucci L, Ianiro G, et al. Randomised clinical trial: faecal microbiota transplantation by colonoscopy vs. vancomycin for the treatment of recurrent Clostridium difficile infection. Aliment Pharmacol Ther 2015; 41: 835-843.
  • 24. Kelly CR, Khoruts A, Staley C, et al. Effect of fecal microbiota transplantation on recurrence in multiply recurrent Clostridium difficile infection. Ann Intern Med 2016; 165: 609-616.
  • 25. Orenstein R, Dubberke E, Lee CH, et al. RBX2660, a microbiota-based drug for the prevention of recurrent Clostridium difficile infection, is safe and effective: results from a randomised, double-blinded, placebo-controlled trial (abstract LB08). 24th UEG Week 2016; Vienna (Austria), 17–19 Oct 2016. United European Gastroenterol J 2016; 4: 802.
  • 26. Hota SS, Sales V, Tomlinson G, et al. Oral vancomycin followed by fecal transplantation versus tapering oral vancomycin treatment for recurrent Clostridium difficile infection: an open-label, randomized controlled trial. Clin Infect Dis 2017; 64: 265-271.
  • 27. Youngster I, Sauk J, Pindar C, et al. Fecal microbiota transplant for relapsing Clostridium difficile infection using a frozen inoculum from unrelated donors: a randomized, open-label, controlled pilot study. Clin Infect Dis 2014; 58: 1515-1522.
  • 28. Allegretti JR, Fischer M, Papa E, et al. Fecal microbiota transplantation delivered via oral capsules achieves microbial engraftment similar to traditional delivery modalities: safety efficacy and engraftment results from a multi-center cluster randomized dose-finding study (abstract Su1738). Digestive Disease Week (DDW) 2016; San Diego (USA), 21–24 May 2016. Gastroenterology 2016; 150 (Suppl 1): S540.
  • 29. Kao D, Roach B, Hotte N, et al. A prospective dual center, randomized trial comparing colonoscopy versus capsule delivered fecal microbiota transplantation (FMT) in the management of recurrent Clostridium difficile infection (RCDAD) (poster A117). Canadian Digestive Diseases Week 2016; Montreal (Canada), 26–29 Feb 2016. Can J Gastroenterol Hepatol 2016: article 4792898, p. 71.
  • 30. Lee CH, Steiner T, Petrof EO, et al. Frozen vs fresh fecal microbiota transplantation and clinical resolution of diarrhea in patients with recurrent Clostridium difficile infection a randomized clinical trial. JAMA 2016; 315: 142-149.
  • 31. Jiang ZD, Ajami NJ, Petrosino JF, et al. Randomised clinical trial: faecal microbiota transplantation for recurrent Clostridum difficile infection — fresh, or frozen, or lyophilised microbiota from a small pool of healthy donors delivered by colonoscopy. Aliment Pharmacol Ther 2017; 45: 899-908.
  • 32. Guyatt GH, Oxman AD, Vist G, et al; for the GRADE Working Group. Rating quality of evidence and strength of recommendations GRADE: an emerging consensus on rating quality of evidence and strength of recommendations. BMJ 2008; 336: 924-926.
  • 33. Rossen NG, MacDonald JK, de Vries EM, et al. Fecal microbiota transplantation as novel therapy in gastroenterology: a systematic review. World J Gastroenterol 2015; 21: 5359-5371.
  • 34. Chapman BC, Moore HB, Overby DM, et al. Fecal microbiota transplant in patients with Clostridium difficile infection: a systematic review. Acute Care Surg 2016; 81: 756-764.
  • 35. Kassam Z, Lee CH, Yuan Y, Hunt RH. Fecal microbiota transplantation for Clostridium difficile infection: systematic review and meta-analysis. Am J Gastroenterol 2013; 108: 500-508.
  • 36. Borody TJ, George L, Andrews P, et al. Bowel-flora alteration: a potential cure for inflammatory bowel disease and irritable bowel syndrome? Med J Aust 1989; 150: 604.
  • 37. Costello SP, Conlon MA, Vuaran MS, et al. Faecal microbiota transplant for recurrent Clostridium difficile infection using long-term frozen stool is effective: clinical efficacy and bacterial viability data. Aliment Pharmacol Ther 2015; 42: 1011-1018.
  • 38. Borody TJ, Fischer M, Mitchell S, Campbell J. Fecal microbiota transplantation in gastrointestinal disease: 2015 update and the road ahead. Expert Rev Gastroenterol Hepatol 2015; 9: 1379-1391.
  • 39. University of Texas Health Science Center, Houston. Fecal microbiota transplantation to treat recurrent C. difficile associated diarrhea via retention enema or oral route. https://clinicaltrials.gov/ct2/show/NCT02449174 (accessed June 2017).
  • 40. Louie TJ, Miller MA, Mullane KM, et al. Fidaxomicin versus vancomycin for Clostridium difficile infection. N Engl J Med 2011; 364: 422-431.
  • 41. Baxter M, Ahmad T, Colville A, Sheridan R. Fatal aspiration pneumonia as a complication of fecal microbiota transplantation. Clin Inf Dis 2015; 61: 136-137.

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Optimising assessment of kidney function when managing localised renal masses

Robert J Ellis, Andre Joshi, Keng L Ng, Ross S Francis, Glenda C Gobe and Simon T Wood
Med J Aust 2017; 207 (3): . || doi: 10.5694/mja17.00161
Published online: 7 August 2017

Summary

 

  • Increased early and incidental detection, improved surgical techniques and technological advancement mean that the management of renal mass lesions is constantly evolving.
  • The treatment of choice for renal mass lesions has historically been radical nephrectomy.
  • Partial nephrectomy is now recommended for localised renal masses, owing to favourable renal functional outcomes.
  • Ablative renal surgery confers a significant risk of chronic kidney disease.
  • There are few studies assessing long term outcomes of nephrectomy on renal outcomes, and virtually no studies assessing long term outcomes for less invasive therapies such as ablation.
  • Unless a renal mass is clearly benign on imaging, management decisions will be made with an assumption of malignancy. The content of this review applies to both benign and malignant renal mass lesions.
  • We advocate for improved strategies for kidney function assessment and risk stratification, early targeted referral, and regular screening for chronic kidney disease for all patients after surgery.

 


  • 1 University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD
  • 2 Princess Alexandra Hospital, Brisbane, QLD
  • 3 Australian Prostate Cancer Research Centre, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD
  • 4 NHMRC Chronic Kidney Disease Centre for Research Excellence (CKD.QLD), University of Queensland, Brisbane, QLD


Correspondence: r.ellis1@uq.edu.au

Acknowledgements: 

Robert Ellis was supported by an Australian Government Research Training Scholarship.

Competing interests:

No relevant disclosures.

  • 1. Znaor A, Lortet-Tieulent J, Laversanne M, et al. International variations and trends in renal cell carcinoma incidence and mortality. Eur Urol 2015; 67: 519-530.
  • 2. Kidney Disease: Improving Global Outcomes CKD Workgroup. KDIGO 2012 clinical practice guideline for the evaluation and management of chronic kidney disease. Kidney Int Suppl 2013; 3: 1-150.
  • 3. Kim SP, Murad MH, Thompson RH, et al. Comparative effectiveness for survival and renal function of partial and radical nephrectomy for localized renal tumors: a systematic review and meta-analysis. J Urol 2012; 188: 51-57.
  • 4. Australian Institute of Health and Welfare. Cancer Incidence Projections: Australia, 2011-2020 (AIHW Cat. No. CAN 62; Cancer Series No. 66). Canberra: AIHW; 2012.
  • 5. Ta AD, Bolton DM, Dimech MK, et al. Contemporary management of renal cell carcinoma (RCC) in Victoria: implications for longer term outcomes and costs. BJU Int 2013; 112 Suppl 2: 36-43.
  • 6. Satasivam P, Reeves F, Rao K, et al. Patients with medical risk factors for chronic kidney disease are at increased risk of renal impairment despite the use of nephron-sparing surgery. BJU Int 2015; 116: 590-595.
  • 7. Srigley JR, Delahunt B, Eble JN, et al. The International Society of Urological Pathology (ISUP) Vancouver classification of renal neoplasia. Am J Surg Pathol 2013; 37: 1469-1489.
  • 8. Samaratunga H, Gianduzzo T, Delahunt B. The ISUP system of staging, grading and classification of renal cell neoplasia. J Kidney Cancer VHL 2014; 1: 26-39.
  • 9. Amin MB, Edge S, Greene F, et al. AJCC Cancer Staging Manual. 8th ed. New York: Springer, 2017.
  • 10. Ljungberg B, Bensalah K, Canfield S, et al. EAU guidelines on renal cell carcinoma: 2014 update. Eur Urol 2015; 67: 913-924.
  • 11. Campbell SC, Novick AC, Belldegrun A, et al. Guideline for management of the clinical T1 renal mass. J Urol 2009; 182: 1271-1279.
  • 12. Sanchez-Martin FM, Millan-Rodriguez F, Urdaneta-Pignalosa G, et al. Small renal masses: incidental diagnosis, clinical symptoms, and prognostic factors. Adv Urol 2008: 310694.
  • 13. Pierorazio PM, Johnson MH, Ball MW, et al. Five-year analysis of a multi-institutional prospective clinical trial of delayed intervention and surveillance for small renal masses: the DISSRM registry. Eur Urol 2015; 68: 408-415.
  • 14. Kim HL, Belldegrun AS, Freitas DG, et al. Paraneoplastic signs and symptoms of renal cell carcinoma: implications for prognosis. J Urol 2003; 170: 1742-1746.
  • 15. Yap NY, Ng KL, Ong TA, et al. Clinical prognostic factors and survival outcome in renal cell carcinoma patients — a Malaysian single centre perspective. Asian Pac J Cancer Prev 2013; 14: 7497-7500.
  • 16. Giannarini G, Petralia G, Thoeny HC. Potential and limitations of diffusion-weighted magnetic resonance imaging in kidney, prostate, and bladder cancer including pelvic lymph node staging: a critical analysis of the literature. Eur Urol 2012; 61: 326-340.
  • 17. Fowler C, Reznek R. The indeterminate renal mass. Imaging 2001; 13: 27-43.
  • 18. Pallwein-Prettner L, Flöry D, Rotter CR, et al. Assessment and characterisation of common renal masses with CT and MRI. Insights Imaging 2011; 2: 543-556.
  • 19. Bosniak MA. The Bosniak renal cyst classification: 25 years later. Radiology 2012; 262: 781-785.
  • 20. Warren KS, McFarlane J. The Bosniak classification of renal cystic masses. BJU Int 2005; 95: 939-942.
  • 21. Frank I, Blute ML, Cheville JC, et al. Solid renal tumors: an analysis of pathological features related to tumor size. J Urol 2003; 170: 2217-2220.
  • 22. Sankineni S, Brown A, Cieciera M, et al. Imaging of renal cell carcinoma. Urol Oncol 2016; 34: 147-155.
  • 23. Mueller-Lisse UG, Mueller-Lisse UL. Imaging of advanced renal cell carcinoma. World J Urol 2010; 28: 253-261.
  • 24. Rhee H, Blazak J, Tham CM, et al. Pilot study: use of gallium-68 PSMA PET for detection of metastatic lesions in patients with renal tumour. EJNMMI Res 2016; 6: 76.
  • 25. Okhunov Z, Rais-Bahrami S, George AK, et al. The comparison of three renal tumor scoring systems: C-Index, P.A.D.U.A., and R.E.N.A.L. nephrometry scores. J Endourol 2011; 25: 1921-1924.
  • 26. Patel HD, Johnson MH, Pierorazio PM, et al. Diagnostic accuracy and risks of biopsy in the diagnosis of a renal mass suspicious for localized renal cell carcinoma: systematic review of the literature. J Urol 2016; 195: 1340-1347.
  • 27. Marconi L, Dabestani S, Lam TB, et al. Systematic review and meta-analysis of diagnostic accuracy of percutaneous renal tumour biopsy. Eur Urol 2016; 69: 660-673.
  • 28. Andersen MF, Norus TP. Tumor seeding with renal cell carcinoma after renal biopsy. Urol Case Rep 2016; 9: 43-44.
  • 29. Masson-Lecomte A, Bensalah K, Seringe E, et al. A prospective comparison of surgical and pathological outcomes obtained after robot-assisted or pure laparoscopic partial nephrectomy in moderate to complex renal tumours: results from a French multicentre collaborative study. BJU Int 2013; 111: 256-263.
  • 30. Choi JE, You JH, Kim DK, et al. Comparison of perioperative outcomes between robotic and laparoscopic partial nephrectomy: a systematic review and meta-analysis. Eur Urol 2015; 67: 891-901.
  • 31. Smaldone MC, Kutikov A, Egleston BL, et al. Small renal masses progressing to metastases under active surveillance: a systematic review and pooled analysis. Cancer 2012; 118: 997-1006.
  • 32. Su MZ, Memon F, Lau HM, et al. Safety, efficacy and predictors of local recurrence after percutaneous radiofrequency ablation of biopsy-proven renal cell carcinoma. Int Urol Nephrol 2016; 48: 1609-1616.
  • 33. Nielsen TK, Lagerveld BW, Keeley F, et al. Oncological outcomes and complication rates after laparoscopic-assisted cryoablation: a European Registry for Renal Cryoablation (EuRECA) multi-institutional study. BJU Int 2017; 119: 390-395.
  • 34. Lane BR, Demirjian S, Derweesh IH, et al. Survival and functional stability in chronic kidney disease due to surgical removal of nephrons: importance of the new baseline glomerular filtration rate. Eur Urol 2015; 68: 996-1003.
  • 35. Johnson DW, Atai E, Chan M, et al. KHA-CARI guideline: early chronic kidney disease: detection, prevention and management. Nephrology 2013; 18: 340-350.
  • 36. Jeon HG, Jeong IG, Lee JW, et al. Prognostic factors for chronic kidney disease after curative surgery in patients with small renal tumors. Urology 2009; 74: 1064-1068.
  • 37. Jeon HG, Choo SH, Jeong BC, et al. Uric acid levels correlate with baseline renal function and high levels are a potent risk factor for postoperative chronic kidney disease in patients with renal cell carcinoma. J Urol 2013; 189: 1249-1254.
  • 38. Torricelli FC, Danilovic A, Marchini GS, et al. Can we predict which patients will evolve to chronic kidney disease after nephrectomy for cortical renal tumors? Int Braz J Urol 2012; 38: 637-643; discussion 644.
  • 39. Malcolm JB, Bagrodia A, Derweesh IH, et al. Comparison of rates and risk factors for developing chronic renal insufficiency, proteinuria and metabolic acidosis after radical or partial nephrectomy. BJU Int 2009; 104: 476-481.
  • 40. Klarenbach S, Moore RB, Chapman DW, et al. Adverse renal outcomes in subjects undergoing nephrectomy for renal tumors: a population-based analysis. Eur Urol 2011; 59: 333-339.
  • 41. Jeon HG, Choo SH, Sung HH, et al. Small tumour size is associated with new-onset chronic kidney disease after radical nephrectomy in patients with renal cell carcinoma. Eur J Cancer 2014; 50: 64-69.
  • 42. Zabor EC, Furberg H, Mashni J, et al. Factors associated with recovery of renal function following radical nephrectomy for kidney neoplasms. Clin J Am Soc Nephrol 2016; 11: 101-107.
  • 43. Tangri N, Stevens LA, Griffith J, et al. A predictive model for progression of chronic kidney disease to kidney failure. JAMA 2011; 305: 1553-1559.
  • 44. Weight CJ, Larson BT, Fergany AF, et al. Nephrectomy induced chronic renal insufficiency is associated with increased risk of cardiovascular death and death from any cause in patients with localized cT1b renal masses. J Urol 2010; 183: 1317-1323.
  • 45. Levey AS, Stevens LA, Schmid CH, et al. A new equation to estimate glomerular filtration rate. Ann Intern Med 2009; 150: 604-612.
  • 46. Kidney Disease: Improving Global Outcomes AKI Workgroup. KDIGO clinical practice guideline for acute kidney injury. Kidney Int Suppl 2012; 2: 1-138.
  • 47. Hu SL, Chang A, Perazella MA, et al. The nephrologist's tumor: basic biology and management of renal cell carcinoma. J Am Soc Nephrol 2016; 27: 2227-2237.
  • 48. Henriksen KJ, Meehan SM, Chang A. Nonneoplastic kidney diseases in adult tumor nephrectomy and nephroureterectomy specimens: common, harmful, yet underappreciated. Arch Pathol Lab Med 2009; 133: 1012-1025.
  • 49. Cho A, Lee JE, Kwon GY, et al. Post-operative acute kidney injury in patients with renal cell carcinoma is a potent risk factor for new-onset chronic kidney disease after radical nephrectomy. Nephrol Dial Transplant 2011; 26: 3496-3501.
  • 50. Trehan A. Comparison of off-clamp partial nephrectomy and on-clamp partial nephrectomy: a systematic review and meta-analysis. Urol Int 2014; 93: 125-134.
  • 51. Mir MC, Pavan N, Parekh DJ. Current paradigm for ischemia in kidney surgery. J Urol 2016; 195: 1655-1663.
  • 52. Chung JS, Son NH, Byun SS, et al. Trends in renal function after radical nephrectomy: a multicentre analysis. BJU Int 2014; 113: 408-415.
  • 53. Kidney Health Australia. Chronic kidney disease (CKD) management in general practice. 3rd ed. Melbourne: KHA, 2015. http://kidney.org.au/health-professionals/prevent/chronic-kidney-disease-management-handbook (accessed June 2017).

Author

remove_circle_outline Delete Author
add_circle_outline Add Author

Comment
Do you have any competing interests to declare? *

I/we agree to assign copyright to the Medical Journal of Australia and agree to the Conditions of publication *
I/we agree to the Terms of use of the Medical Journal of Australia *
Email me when people comment on this article

Online responses are no longer available. Please refer to our instructions for authors page for more information.

Pagination

Subscribe to