In reply: Ada’s symptom checker was identified using the selection process described in our article.1 For the search term “symptom”, Ada was the second listed program; for “symptom checker” and “health symptom diagnosis”, Ada appeared third, but it did not appear for “medical diagnosis” and “cough fever headache” search terms. A number of other European‐based symptom checkers were identified via our search strategy; therefore, a bias towards CE (Conformité Européene)‐marked symptom checkers appears unlikely.
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- 1. Hill MG, Sim M, Mills B. The quality of diagnosis and triage advice provided by free online symptom checkers and apps in Australia. Med J Aust 2020; 212: 514–519. https://www.mja.com.au/journal/2020/212/11/quality-diagnosis-and-triage-advice-provided-free-online-symptom-checkers-and
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