Table 2.

Significant factors affecting occurrence of surgical site infection after colon surgery: univariate and multivariate analyses

Factors	Univariate analysis (p value)	Multivariate analysis (p value)
Operation year	0.0084	0.0318
Age	0.5847	–
Sex	0.0128	0.3542
Operating time	< 0.0001	< 0.0001
Surgical wound classification	< 0.0001	< 0.0001
ASA score	< 0.0001	0.0858
Emergency operation	< 0.0001	0.117
Surgical approach (laparoscopic or open surgery)	< 0.0001	< 0.0001
Combined resection	0.008	0.5947
Stoma creation	< 0.0001	< 0.0001
Silk use	< 0.0001	0.0002

Stoma, cases in which stoma was present during surgery either as preoperative stoma or creation of stoma (emergency creation of salvage stoma for anastomotic leakage was excluded); Classes 1, 2, 3, and 4 of surgical wound classification indicates clean, clean-contaminated, contaminated, and dirty-infected wound, respectively; combined resection, simultaneous resection of other organs during colectomy; silk use, cases in which intra-abdominal silk suture was used

ASA American Society of Anesthesiologists