Table 3.
Unadjusted Outcomes by Surgeon Volume Category
| Surgeon volume category* |
||||
|---|---|---|---|---|
| Outcome | Low | Medium | High | p Value |
| Colectomy type, n (%) | ||||
|
| ||||
| Right | 2,127 (54) | 3,753 (53) | 3,540 (52) | NS |
|
| ||||
| Transverse | 189 (5) | 288 (4) | 240 (4) | 0.004 |
|
| ||||
| Left | 439 (11) | 809 (12) | 829 (12) | NS |
|
| ||||
| Sigmoid | 796 (20) | 1,463 (21) | 1,416 (21) | NS |
|
| ||||
| Total | 116 (3) | 297 (4) | 351 (5) | <0.001 |
|
| ||||
| Other | 249 (7) | 428 (6) | 419 (6) | NS |
|
| ||||
| Any postoperative complication, n (%) | 330 (8) | 531 (8) | 454 (7) | 0.003 |
|
| ||||
| Complications if high severity of illness, n (%) | 86 (22) | 90 (16) | 80 (14) | 0.002 |
|
| ||||
| ICU admission, n (%) | 904 (23) | 1,254 (18) | 1,107 (16) | <0.001 |
|
| ||||
| ICU admission if low severity of illness, n (%) | 725 (21) | 1,023 (16) | 870 (14) | <0.001 |
|
| ||||
| Reoperation, n (%) | 145 (4) | 192 (3) | 160 (2) | <0.001 |
|
| ||||
| Inpatient length of stay, d, mean (SD) | 6 (7) | 6 (7) | 5 (9) | <0.001 |
|
| ||||
| Direct hospital cost, $, mean (SD) | 14,758 (16,323) | 13,602 (14,541) | 13,100 (14,196) | <0.001 |
|
| ||||
| Laparoscopic | 11,898 (9,175) | 11,389 (11,458) | 10,895 (9,905) | <0.001 |
|
| ||||
| Open | 16,589 (19,354) | 15,386 (16,401) | 15,192 (17,050) | <0.001 |
High severity of illness indicates major/extreme severity of illness; low severity of illness indicates minor/moderate severity of illness.
*
Low, <5 colectomies per year; medium, 5—11 colectomies per year; high, >11 colectomies per year.