Table 1.
Univariate analysis of risk factors associated with postoperative complications
| Characteristics | All | Postoperative complications | P value | |
|---|---|---|---|---|
| (n = 359) | Yes (n = 139) | No (n = 220) | ||
| Age (year)a | 53.4 ± 10.4 | 53.1 ± 9.6 | 53.5 ± 10.8 | 0.717 |
| Sex, male, n (%)c | 179 (49.9) | 52 (37.4) | 127 (57.7) | <0.001 |
| BMI (kg/m2)a | 22.3 ± 3.7 | 21.6 ± 3.5 | 22.7 ± 3.7 | 0.004 |
| Comorbiditiesc | ||||
| Diabetes mellitus | 49 (13.6) | 16 (11.5) | 38 (17.3) | 0.137 |
| Hypertension | 113 (31.5) | 40 (28.8) | 73 (33.2) | 0.381 |
| Preoperative hemoglobin (g/L)a | 120.7 ± 58.6 | 109.4 ± 26.9 | 127.8 ± 70.9 | 0.004 |
| Preoperative ALB (g/L)a | 40.6 ± 3.8 | 40.2 ± 4.0 | 40.8 ± 3.7 | 0.185 |
| Preoperative CRP (mg/L)a | 9.5 ± 23.8 | 12.2 ± 27.1 | 7.9 ± 21.3 | 0.097 |
| Operation time (min)b | 160 (70–383) | 160 (70–365) | 165 (70–383) | 0.483 |
| Type of surgery, n (%)c | 0.117 | |||
| Right colectomy | 126 (35.1) | 60 (43.2) | 66 (30.0) | |
| Transverse colectomy | 14 (3.9) | 5 (3.6) | 9 (4.1) | |
| Left colectomy | 44 (12.3) | 19 (13.7) | 25 (11.4) | |
| Sigmoid resection | 41 (11.4) | 12 (8.6) | 29 (13.2) | |
| Rectal resection | 116 (32.3) | 38 (27.3) | 78 (35.5) | |
| Total colectomy | 18 (5.0) | 5 (3.6) | 13 (5.9) | |
| Laparoscopic surgery, n (%)c | 142 (39.6) | 49 (35.3) | 93 (42.3) | 0.185 |
| Conversion, n (%)c | 25 (7.0) | 11 (7.9) | 14 (6.4) | |
| Estimated blood loss (ml)a | 226 ± 137 | 245 ± 139 | 214 ± 134 | 0.035 |
| Stoma creation, n (%)c | 58 (16.2) | 30 (21.6) | 28 (12.7) | 0.026 |
| CRP on POD 3 (mg/L)a | 89.1 ± 64.4 | 123.1 ± 66.9 | 67.7 ± 52.5 | <0.001 |
| Postoperative CARa | 2.8 ± 2.3 | 4.2 ± 2.6 | 2.0 ± 1.6 | <0.001 |
| Surgical indication, n (%)c | <0.001 | |||
| Malignant | 299 (83.3) | 97 (69.8) | 202 (91.8) | |
| Non-malignant | 60 (16.7) | 42 (30.2) | 18 (8.2) | |
| ASA ≥3, n (%)c | 27 (7.5) | 16 (11.5) | 11 (5.0) | 0.023 |
| Intraoperative blood transfusion, n (%)c | 19 (5.3) | 11 (7.9) | 8 (3.6) | 0.078 |
CRP C-reactive protein, ALB albumin, POD postoperative day, CAR CRP to albumin (CRP/ALB) ratio
aValues are expressed as the mean ± SD
bValues are expressed as the median (range)
cValues are expressed as n (%)