Table 3.
Variable | Group; no. (%) of patients* | p value | |
---|---|---|---|
No SSI n = 282 |
SSI n = 55 |
||
Age, yr, median (IQR) | 40 (31–52) | 54 (43–61) | < 0.001† |
Sex | |||
Male | 104 (36.9) | 40 (73) | < 0.001‡ |
Female | 178 (63.1) | 15 (27) | |
Body mass index, median (IQR) | 29 (25–36) | 27 (25–31) | 0.02† |
ASA score | < 0.001‡ | ||
1 | 143 (50.7) | 16 (29) | |
2 | 107 (37.9) | 13 (24) | |
3 | 31 (11.0) | 18 (33) | |
4 | 1 (0.4) | 6 (11) | |
5 | 0 (0.0) | 2 (4) | |
Diabetic | 52 (18.4) | 18 (33) | 0.02‡ |
Smoking status | 0.004‡ | ||
Smoker | 36 (12.8) | 5 (9) | |
Former smoker | 8 (2.8) | 5 (9) | |
Nonsmoker | 216 (76.6) | 34 (62) | |
Unknown | 22 (7.8) | 11 (20) | |
Steroid use | 11 (3.9) | 4 (7) | 0.3‡ |
Chemotherapy | 6 (2.1) | 4 (7) | 0.04‡ |
Preoperative hemoglobin level, g/L, median (IQR) | 13 (12–14) | 12 (11–14) | 0.1† |
Preoperative albumin level, g/L, median (IQR) | 36 (33–38) | 31 (26–35) | < 0.001† |
Benign disease | 267 (94.7) | 33 (60) | < 0.001‡ |
ASA = American Society of Anesthesiologists; IQR = interquartile range; SSI = surgical site infection.
Except where noted otherwise.
Wilcoxon test.
Pearson test.