Research Article
Influence of Individual Surgeon Volume on Oncological Outcome of Colorectal Cancer Surgery
Table 1
Preoperative characteristics.
| Characteristics | Low-volume surgeon () Number of cases (%) | High-volume surgeon () Number of cases (%) | value |
| Gender | | | | Male | 234 (52) | 184 (57) | 0.12 | Female | 219 (48) | 137 (43) |
| Age in years | | | | Median (95% CI) | 69 (46–92) | 69 (48–90) | | <50 | 30 (7) | 11 (3) | 0.66 | 50–75 | 276 (61) | 218 (68) | >75 | 147 (32) | 92 (29) |
| ASA-classification [16] | | | | 1 | 101 (23) | 57 (18) | <0.001 | 2 | 218 (47) | 192 (60) | 3 | 112 (25) | 69 (21) | 4 | 22 (5) | 3 (1) |
| Comorbidity | | | | No | 147 (33) | 102 (32) | 0.83 | Yes | 305 (67) | 219 (68) | Cardiac | | | | No | 367 (81) | 251 (78) | 0.30 | Yes | 85 (19) | 70 (22) | Pulmonary | | | | No | 411 (91) | 285 (89) | 0.33 | Yes | 41 (9) | 36 (11) | Diabetes | | | | No | 393 (87) | 293 (91) | 0.06 | Yes | 59 (13) | 28 (9) |
| BMI | | | | Median (95% CI) | 26 (18.5–32.5) | 26 (18.7–32.7) | 0.54 |
| Surgical technique | | | | Open | 187 (41) | 72 (22) | <0.001 | Laparoscopic | 266 (59) | 249 (78) |
| Type of resection | | | | Right colon | 149 (33) | 86 (27) | <0.001 | Transversum | 26 (6) | 6 (2) | Left colon | 49 (11) | 29 (9) | Sigmoid | 109 (24) | 95 (29) | LAR | 95 (21) | 70 (22) | APR | 25 (5) | 35 (11) |
| Neoadjuvant radiotherapy (rectum only) | | | | No | 74 (56) | 52 (45) | 0.10 | Yes | 59 (44) | 63 (55) |
| Neoadjuvant chemoradiotherapy (rectum only) | | | | No | 130 (98) | 90 (78) | <0.001 | Yes | 3 (2) | 25 (22) |
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American Society of Anesthesiology; body mass index; low anterior resection; abdominoperineal resection; 95% confidence interval.
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