Risk factor | Radical resection of colon carcinoma | Radical resection of rectal carcinoma | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cases | SSI(%) | Univariate analysis | Multivariate analysis | Cases | SSI(%) | Univariate analysis | Multivariate analysis | |||||
χ2 | P Value | Odds Ratio (95%CI) | P Value | χ2 | P Value | Odds Ratio (95%CI) | P Value | |||||
Age (yr) | 0.935 | 0.627 | 4.101 | 0.129 | ||||||||
≤60 | 1555 | 2.38 | 1061 | 6.03 | ||||||||
61–70 | 1083 | 2.77 | 807 | 4.96 | ||||||||
> 70 | 723 | 3.04 | 451 | 3.55 | ||||||||
Sex | 3.532 | 0.060 | 0.078 | 0.781 | ||||||||
Male | 2016 | 2.98 | 1436 | 5.22 | ||||||||
Female | 1390 | 1.94 | 887 | 4.96 | ||||||||
BMI | 0.107 | 0.743 | 0.916 | 0.338 | ||||||||
≤24 | 2437 | 2.50 | 1549 | 4.97 | ||||||||
> 24 | 887 | 2.71 | 689 | 5.95 | ||||||||
Preoperative hospital stay | 0.021 | 0.885 | 0.006 | 0.940 | ||||||||
< 48 h | 222 | 2.70 | 71 | 4.23 | ||||||||
≥48 h | 3184 | 2.54 | 2252 | 5.15 | ||||||||
Surgery type | 5.763 | 0.016 | 1.558(0.882–2.753) | 0.127 | 17.536 | 0.000 | 1.995(1.268–3.139) | 0.003 | ||||
Emergency | 390 | 4.36 | 296 | 10.14 | ||||||||
Selective | 3016 | 2.32 | 2027 | 4.39 | ||||||||
Operative procedure | 5.446 | 0.020 | 0.540(0.344–0.847) | 0.007 | 0.932 | 0.334 | 0.672(0.448–1.006) | 0.054 | ||||
Laparoscopic | 1710 | 1.93 | 1628 | 4.85 | ||||||||
Open | 1696 | 3.19 | 695 | 5.82 | ||||||||
ASA score | 4.281 | 0.039 | 0.653(0.387–1.103) | 0.111 | 2.700 | 0.100 | 0.588(0.361–0.958) | 0.033 | ||||
1–2 | 2907 | 2.34 | 2003 | 4.84 | ||||||||
≥3 | 481 | 3.95 | 312 | 7.05 | ||||||||
Operative time | 25.636 | 0.000 | 0.513(0.379–0.692) | 0.000 | 5.802 | 0.122 | 0.619(0.472–0.812) | 0.001 | ||||
≤2 h | 724 | 1.80 | 294 | 3.06 | ||||||||
2–4 h | 2156 | 2.04 | 1410 | 4.89 | ||||||||
≥4 h | 526 | 5.70 | 619 | 6.62 | ||||||||
0.5-2 h medication | 0.332 | 0.564 | 0.760 | 0.383 | ||||||||
Yes | 2038 | 2.45 | 1108 | 5.60 | ||||||||
No | 1544 | 2.79 | 1130 | 4.78 | ||||||||
No. of beds | 5.816 | 0.055 | 0.644(0.451–0.921) | 0.016 | 14.707 | 0.001 | 0.513(0.356–0.739) | 0.000 | ||||
≤1500 | 591 | 1.35 | 274 | 2.19 | ||||||||
1500–2500 | 1297 | 2.39 | 655 | 3.36 | ||||||||
≥2500 | 1518 | 3.16 | 1394 | 6.53 |