Team climate
Scores per dimension were generated in percentages, with a higher value representing greater team climate (range, 0–100%). Scores per subdimension depended on the number of questions related to that specific subdimension. If, for example, the subdimension entailed three questions, the maximum score for that subdimension was 3 × 5 (5-point Likert scale) = 15 points. The score was then calculated as: first dimension score/15 × 100%. The dimension score is the mean of all according subdimension scores. The overall TCI score comprises the mean scores of all four dimensions. A linear mixed model was used to measure changes in the TCI scores in 2016 and 2019 compared with 2014 (baseline). We adjusted for clustering of surgical teams. If this model provided no fit of the data, we omitted the random effect for teams. A p-value of ≤0.05 was regarded as statistically significant. The statistical software IBM SPSS V.25 was used for all statistical analyses and data processing.