Table 3.
Preoperative risk factors
| Risk factor | MBP only group (n = 156)n (%) | MBP + OABP group (n = 155)n (%) | P-value (exploratory) |
| Immunosuppression: | 0.987 | ||
| No | 144 (92.3) | 142 (91.6) | |
| Yes | 12 (7.7) | 13 (8.4) | |
| Diabetes: | 0.534 | ||
| No | 131(84.0) | 135 (87.) | |
| Yes | 25 (16.0) | 20 (12.9) | |
| Cancer: | 0.977 | ||
| No | 32 (20.5) | 33 (21.3) | |
| Yes | 124 (79.5) | 122 (78.7) | |
| Chronic kidney disease: | 0.029 | ||
| No | 142 (91.0) | 127 (81.9) | |
| Yes | 14 (9.0) | 28 (18.1) | |
| Serum albumin (g/l) | 0.035 | ||
| < 35 | 131 (84.0) | 114 (73.5) | |
| > 35 | 25 (16.0) | 41 (26.5) | |
| Preoperative red blood cell transfusion: | 0.374 | ||
| No | 143 (91.7) | 147 (94.8) | |
| Yes | 13 (8.3) | 8 (5.2) | |
| ASA grade: | 0.322 | ||
| 1 | 22 (14.1) | 18 (11.6) | |
| 2 | 96 (61.5) | 86 (55.5) | |
| 3 | 34 (21.8) | 48 (31.0) | |
| 4 | 4 (2.6) | 3 (1.9) | |
| Cardiovascular comorbidity: | 0.953 | ||
| No | 75 (48.1) | 73 (47.1) | |
| Yes | 81 (51.9) | 82 (52.9) | |
| Respiratory comorbidity: | 0.859 | ||
| No | 131 (84.0) | 128 (82.6) | |
| Yes | 25 (16.0) | 27 (17.4) | |
| Neurological comorbidity: | 0.450 | ||
| No | 151 (96.8) | 153 (98.7) | |
| Yes | 5 (3.2) | 2 (1.3) | |
| Endocrine comorbidity: | 0.999 | ||
| No | 141 (90.4) | 140 (90.3) | |
| Yes | 15 (9.6) | 15 (9.7) | |
| Gastrointestinal comorbidity: | 0.748 | ||
| No | 135 (86.5) | 137 (88.4) | |
| Yes | 21 (13.5) | 18 (11.6) | |
| Surgical approach: | 0.570 | ||
| Laparoscopic | 103 (66.0) | 108 (69.7) | |
| Open | 53 (34.0) | 47 (30.3) |
MBP, mechanical bowel preparation; OABP, oral antibiotic bowel preparation.