Electronic supplementary material
What is Known:
• Diagnostic errors are an important source of preventable patient harm and have an estimated incidence of 10–15 %.
• They are multifactorial in origin and include cognitive, system-related and situational factors.
What is New:
• We identified a low rate of self-perceived diagnostic error in contrast to the existing literature.
• Incomplete history and examination, inadequate staffing levels and excessive workload are cited as the principal contributing factors to diagnostic error in this study.