Table 2.
Patients characteristics and potential risk factors of COLO surgery
| Characteristics* | Total (N=192) | With SSI (N=38) | Without SSI (N=154) | P-value* |
|---|---|---|---|---|
| Age at surgery, in years, median (IQR) | 59 (46–70) | 54.5 (47–63) | 59 (47–70) | 0.060 |
| Gender % | Male 51.9 | Male 55.3 | Male 51.0 | 0.638 |
| Female 48.1 | Female 44.7 | Female 49.0 | ||
| Duration of surgery in minutes, median | 160 | 195 | 150 | 0.004 |
| ASA score, n (%) | ||||
| 1+2 | 104 (64.2) | 22 (73.3) | 82 (62.0) | 0.267 |
| 3+4 | 57 (35.8) | 8 (26.7) | 49 (38.0) | |
| ASA unknown | 31 | 8 | 23 | |
| Wound class, n (%) | ||||
| CC | 145 (76.3) | 30 (78.9) | 115 (75.7) | 0.670 |
| Co + D | 45 (23.7) | 8 (21.1) | 37 (24.3) | |
| Unknown | 2 | 0 | 2 | |
| Scope use | 39 (20.5) | 5 (13.2) | 34 (22.4) | 0.209 |
| SSI by SSI Risk Index category, n (%) | 0.411 | |||
| 0+1 | 125 (78.1) | 21 (72.4) | 104 (83.2) | |
| 2+3 | 35 (21.9) | 8 (27.6) | 27 (20.6) | |
| Unknown | 32 | 9 | 23 |
Notes:
*
Chi-squared or Fisher’s exact test, the P-value used was for categorical variables and in the Mann–Whitney U test, the P-value used was for continuous variables.
Abbreviations: ASA, American Society for Anesthesiologists; CC, clean-contaminated wound; CO, contaminated wound; COLO, colon; D, dirty wound; IQR, interquartile range; SSI, surgical site infection.