Table 2 Postoperative outcomes in the general population and subgroups according to BMI and VO categories
|  | Total study population (N = 520) | Low BMI (N = 362) | High BMI (N = 158) | P value | Non-VO (N = 183) | VO (N = 337) | P value |
|---|---|---|---|---|---|---|---|
Infectious complications | 121(23.27) | 71(19.61) | 50(31.65) | 0.003* | 25(13.66) | 96(28.49) | 0.000* |
Anastomotic leakage | 20(3.85) | 13(3.59) | 7(4.43) | 0.647 | 9(4.92) | 11(3.26) | 0.349 |
Wound infection | 28(5.38) | 16(4.42) | 12(7.59) | 0.140 | 5(2.73) | 23(6.82) | 0.048* |
Abdominal or pelvic infection | 23(4.42) | 13(3.59) | 10(6.33) | 0.163 | 2(1.09) | 21(6.23) | 0.006* |
Pneumonia | 46(8.85) | 27(7.46) | 19(12.03) | 0.092 | 8(4.37) | 38(11.28) | 0.008* |
Urinary infection | 4(0.77) | 2(0.55) | 2(1.27) | 0.392 | 1(0.55) | 3(0.89) | 0.668 |
Postoperative hospital stays (d) | 13.00(11.00, 16.00) | 13.00(11.00, 16.00) | 12.00(11.00, 15.00) | 0.720 | 13.00(11.00,15.00) | 13.00(11.00, 16.00) | 0.878 |
Post-operative ICU | 49(9.42) | 36(9.94) | 13(8.23) | 0.380 | 12(6.56) | 37(10.98) | 0.099 |