| All operations | Laparoscopic cholecystectomy | Carotid endarterectomy | |||||||
| Mean | SD | Test | Mean | SD | Test | Mean | SD | Test | |
| SAQ teamwork climate | |||||||||
| Pre | 64.1 | 18.9 | t = −2.95 | 63.8 | 21.7 | t = −1.81 | 64.5 | 15.0 | t = −2.34 |
| Post | 69.2 | 18.2 | p = 0.007* | 67.4 | 20.7 | p = 0.089 | 72.0 | 14.2 | p = 0.041* |
| Total NOTECHS | |||||||||
| Pre | 37.0 | 4.3 | t = −2.35 | 35.5 | 4.9 | t = −3.32 | 38.9 | 2.7 | t = 0.82 |
| Post | 38.7 | 3.2 | p = 0.021* | 38.7 | 2.9 | p = 0.001* | 38.8 | 3.8 | p = 0.935 |
| Operating technical errors† | |||||||||
| Pre | 1.73 | 1.5 | u = 1071.0 | 2.6* | 1.4 | u = 235.0 | 0.7 | 0.7 | u = 206.5 |
| Post | 0.98 | 0.9 | p = 0.009* | 1.3 | 1.0 | p<0.001* | 0.4 | 0.6 | p = 0.236 |
| Non-operative procedural errors† | |||||||||
| Pre | 8.48 | 4.2 | t = 4.383 | 7.3 | 4.0 | t = 3.66 | 9.9 | 4.1 | t = 2.42 |
| Post | 5.16 | 3.7 | p<0.001* | 4.1 | 2.9 | p = 0.001* | 7.0 | 4.1 | p = 0.020* |
| Operating time (min) | |||||||||
| Pre | 103.7 | 38.9 | t = 0.29 | 75.4 | 16.8 | t = 0.77 | 137.1 | 29.8 | t = −1.28 |
| Post | 101.2 | 49.1 | p = 0.770 | 71.7 | 20.4 | p = 0.443 | 151.1 | 42.5 | p = 0.208 |
| Length of stay (days) | |||||||||
| Pre | 2.23 | 0.7 | u = 1263.5 | 2.0 | 0.5 | u = 482.0 | 2.5 | 0.7 | u = 196.5 |
| Post | 2.02 | 0.6 | p = 0.086 | 1.8 | 0.4 | p = 0.577 | 2.3 | 0.7 | p = 0.192 |
*Significant difference at p<0.05. †Figures represent mean values per operation.
NOTECH, Non-Technical Skills; SAQ, Safety Attitudes Questionnaire.