Table 1.
Baseline characteristics of physicians with different specialties
| Characteristics | Emergency physicians (N=1584) | Surgeons (N=12 103) | Radiologists/pathologists (N=2979) | p Value |
| Men, n (%) | 1473 (93.0) | 11 347 (93.8) | 2308 (77.5) | <0.0001 |
| Age (years), n (%) | <0.0001 | |||
| <35 | 958 (60.5) | 6842 (56.5) | 1889 (63.4) | |
| 35–45 | 530 (33.5) | 3501 (28.9) | 774 (26.0) | |
| ≥45 | 96 (6.0) | 1760 (14.6) | 316 (10.6) | |
| Mean (SD) | 34.7 (5.5) | 37.2 (8.5) | 35.9 (8.4) | |
| Observed person-years | 54 51.3 | 124 483.1 | 28 580.3 | NA |
| Failure, n (%) | 10 (0.63) | 1298 (10.7) | 87 (2.9) | <0.0001* |
| Attrition rate (per 1000 person-year) | 1.83 | 10.42 | 3.04 | <0.0001 |