Table 1.

Continuous variables tested in patients with and without SSI

Variables	Patients with SSI (mean, median, range) (n = 66)	Patients without SSI (mean, median, range) (n = 615)	P value
Age (years)	41.4, 39 (18–66)	42.5, 43 (18–74)	0.43910
Hospital stay (days)	31.0, 21.5 (7–263)	16.3, 15 (4–76)	0.00701**
Preoperative stay (days)	5.7, 5 (0–27)	5.7, 5 (0–37)	0.97616
Operation duration (min)	117.4, 120 (35–250)	106.7, 95 (30–335)	0.05639
Intraoperative blood loss (ml)	155.6, 100 (10–1000)	122.2, 100 (10–800)	0.01501*
Lengths of incision (cm)	9.2, 8.5 (0.5–20)	9.0, 10 (0.5–27)	0.76514
Intraoperative temperature (°C)	35.8, 36.2 (34.8–36.9)	36.3, 36.2 (35.1–37.2)	0.03728*

Significant Variables (*P < 0.05; **P < 0.01; ****P < 0.0001)