Scale mean (SD) scores, and item median (IQR) scores for physicians and nurses separately.

1Median (Q1–Q3) provided for individual likert scale items (range 1–5), mean (SD) provided for subscales (range 1–5) and binary type items (range 0 or 1).2For likert scale items, percent of respondents who “somewhat agree” or “strongly agree”, for binary type items, percent of respondents answering “yes”.3Professional attitudes score = sum (improving quality of care, maintaining professional competence, fulfilling professional responsibility, Interprofessional collaboration) – 4 (ranges from 0–16).4Interprofessional collaboration = mean of shared education and collaboration and physician authority.5All professional behaviour items are binary (Yes/No) type items.6Professional reactions to colleagues’ performance not aggregated as a subscale.7Sample size restricted to those (physicians/nurses) who observed the specific type of underperformance in the past 3 years.