Table 5.
Univariate analysis of the use of diversion by significant risk factors for anastomotic leak
| Characteristic, n (%) | Not Diverted (n=37,950) | Diverted (n=3,960) | p-value |
|---|---|---|---|
| Age, years | <0.01 | ||
| 18–39 | 1,917 (5) | 220 (6) | |
| 40–49 | 5,149 (14) | 569 (14) | |
| 50–59 | 10,385 (27) | 1,219 (31) | |
| 60–69 | 10,758 (28) | 1,136 (29) | |
| 70–79 | 6,844 (18) | 617 (16) | |
| 80+ | 2,897 (8) | 199 (5) | |
| Sex, male | 18,697 (49) | 2,311 (58) | <0.01 |
| Tobacco use | 6,351 (17) | 810 (21) | <0.01 |
| Hematocrit < 30% | <0.01 | ||
| No | 34,045 (90) | 3,665 (93) | |
| Yes | 1,686 (4) | 178 (5) | |
| Missing | 2,219 (6) | 117 (3) | |
| Diagnostic indication | <0.01 | ||
| Cancer | 15,242 (40) | 3,112 (79) | |
| Benign neoplasm | 4,548 (12) | 19 (1) | |
| Diverticular disease | 18,160 (48) | 829 (21) | |
| Neoadjuvant chemotherapy with last dose within 90 days | <0.01 | ||
| Yes | 1,463 (4) | 1,771 (45) | |
| Bowel Prep | <0.01 | ||
| Mechanical + antibiotic | 12,936 (34) | 1,538 (39) | |
| No prep | 11,779 (31) | 1,200 (30) | |
| Mechanical only | 1,749 (5) | 153 (4) | |
| Oral antibiotic only | 7,634 (20) | 710 (18) | |
| Missing | 3,852 (10) | 359 (9) | |
| ASA class | <0.01 | ||
| I/II | 21,013 (55) | 1,784 (45) | |
| III | 15,875 (42) | 2,069 (52) | |
| IV | 1,062 (3) | 107 (3) | |
| Approach with anastomosis location | <0.01 | ||
| Laparoscopic with colocolostomy | 15,036 (40) | 194 (5) | |
| Robotic with colocolostomy | 1,424 (4) | 18 (1) | |
| Laparoscopic with coloproctostomy | 12,599 (33) | 1,886 (48) | |
| Open with coloproctostomy | 3,235 (9) | 1,130 (29) | |
| Robotic with coloproctostomy | 1,948 (5) | 572 (14) | |
| Open with colocolostomy | 3,708 (10) | 160 (4) | |
| Operative time (minutes) | <0.01 | ||
| ≤ 122 | 8,493 (22) | 210 (5) | |
| 123–168 | 9,663 (26) | 401 (10) | |
| 169–225 | 9,934 (26) | 916 (23) | |
| ≥ 226 | 9,860 (26) | 2,433 (61) | |
| Wound class | <0.01 | ||
| I/II | 30,854 (81) | 3,082 (78) | |
| III/IV | 7,096 (19) | 878 (22) |