Table 1.
Baseline characteristics
| Total (n = 318) | Hernia (n = 110) | No hernia (n = 208) | P § | |
|---|---|---|---|---|
| Age (years)* | 61·7 (53–72) | 61·7 (52–73) | 61·7 (54–71) | 0·992¶ |
| Sex ratio (M : F) | 170 : 148 | 52 : 58 | 118 : 90 | 0·108 |
| BMI (kg/m2)* | 26 (23–30) | 27·2 (23·5–32·5) | 25·5 (22–28) | < 0·001¶ |
| ASA fitness grade | 0·700 | |||
| I–II | 286 (89·9) | 98 (89·1) | 188 (90·4) | |
| III–IV | 32 (10·1) | 12 (10·9) | 20 (9·6) | |
| Indication for stoma construction | 0·001 | |||
| Protection of anastomosis | 194 (61·0) | 51 (46·4) | 143 (68·8) | |
| Anastomotic leak | 25 (7·9) | 10 (9·1) | 15 (7·2) | |
| Acute colonic obstruction | 52 (16·4) | 24 (21·8) | 28 (13·5) | |
| Other benign condition† | 47 (14·8) | 25 (22·7) | 22 (10·6) | |
| Underlying malignant disease | 191 (60·1) | 48 (43·6) | 143 (68·8) | < 0·001 |
| Current smoker | 66 (20·8) | 24 (21·8) | 42 (20·2) | 0·665 |
| Preoperative haemoglobin (mmol/l)* | 7·9 (7·2–8·5) | 8·1 (7·3–8·5) | 7·8 (7·1–8·4) | 0·140¶ |
| Co‐morbidity | ||||
| Hypertension | 106 (33·3) | 47 (42·7) | 59 (28·4) | 0·012 |
| Diabetes mellitus | 41 (12·9) | 15 (13·6) | 26 (12·5) | 0·861 |
| COPD | 22 (6·9) | 6 (5·5) | 16 (7·7) | 0·643 |
| Cardiovascular disease | 69 (21·7) | 28 (25·5) | 41 (19·7) | 0·254 |
| Primary abdominal surgery | 0·796 | |||
| Open | 138 (43·4) | 49 (44·5) | 89 (42·8) | |
| Laparoscopic | 160 (50·3) | 53 (48·2) | 107 (51·4) | |
| n.a.‡ | 20 (6·3) | 8 (7·3) | 12 (5·8) | |
| Primary resection type | 0·131 | |||
| Left hemicolectomy | 22 (6·9) | 10 (9·1) | 12 (5·8) | |
| Right hemicolectomy | 13 (4·1) | 4 (3·6) | 9 (4·3) | |
| Subtotal colectomy | 19 (6·0) | 7 (6·4) | 12 (5·8) | |
| Sigmoidectomy | 101 (31·8) | 43 (39·1) | 58 (27·9) | |
| Low anterior resection | 143 (45·0) | 38 (34·5) | 105 (50·5) | |
| n.a.‡ | 20 (6·3) | 8 (7·3) | 12 (5·8) | |
| Adjuvant therapy | 49 (15·4) | 11 (10·0) | 38 (18·3) | 0·071 |
| Emergency surgery | 87 (27·4) | 39 (35·5) | 48 (23·1) | 0·024 |
Values in parentheses are percentages unless indicated otherwise;
*
values are median (i.q.r.).
†
Includes diverticulitis, slow‐transit colon and anal fistula.
‡
Stoma construction was the primary surgery with no subsequent resection (anal fistula). COPD, chronic obstructive pulmonary disease, n.a., not available.
§
χ2 or Fisher's exact test, except
¶
Mann–Whitney U test.