How Do Resident Surgeons Identify Operative Case Complexity? An Analysis of Resident versus Attending Perceptions

Accurate recognition of patient-related complexity of an operation is critical for appropriate surgical decision making. It is not yet understood whether general surgery residents are able to accurately assess the relative complexity of a given operative case. This study investigates the agreement of case complexity ratings between residents and attending surgeons and explores whether resident-related factors correlate with any discordance in perception of patient-related operative complexity.

Residents and attending surgeons rated the relative complexity of completed cases on a 3 point scale via the SIMPL (Society for Improving Medical Professional Learning) operative assessment smartphone app. Additional trainee demographic data, autonomy ratings, and performance ratings were also obtained from the SIMPL registry for each rated case. Complexity agreement was defined as an equal rating between the resident and attending and assigned a value of zero. Over-estimate ratings were assigned a positive value and under-estimate ratings were assigned a negative value. Trends in complexity agreement were analyzed using descriptive statistics and mixed-effects models.

A total of 43,179 general surgery cases were rated by 1946 categorical general surgery residents and 1520 attending surgeons between 2015 and 2020. Residents and attendings agreed on case complexity in 63.23% of cases, while the residents overestimated complexity in 13.37% of cases and underestimated complexity in 23.40% of cases. Every level of resident except post-graduate year 2 had similar rates of agreement about the complexity of a procedure, while residents who received a higher autonomy rating were more likely to be in agreement with the faculty raters (OR 1.12, 95% CI 1.06-1.19).

The results of this study suggest that general surgery residents inaccurately perceive the patient-related complexity of a given case approximately one third of the time. Greater experience and operative autonomy appear to be associated with higher complexity agreement. Future research into factors influencing perceived case complexity may provide insight into how to best implement new teaching for surgical residents regarding the concept of case complexity.