In a 2002 master's thesis for the Graduate Institute of Health Care Organization Administration at NTU entitled "The Physician's Knowledge, Attitude, and Response toward Patient Safety Issues," Chang Pi-cheng found that 30.6 % of doctors in northern Taiwan had committed errors in medical practice. The most common error was incorrect evaluation (25.4 %), with the main cause being lack of experience (also 25.4 %).
台大醫管所畢業生張必正的「醫生對於病人安全相關問題的認知、看法與因應行為之研究」（民國 91 年）中，北部有 30.6％的醫生曾發生醫療錯誤，錯誤的類型以評估錯誤最多（25.4％），錯誤的原因則以經驗不足最多（25.4％）。