Table 2 Outcomes of included patients.

From: Prospective multicenter study on the incidence of surgical site infection after emergency abdominal surgery in China

Variables

SSI group (n = 71)

Non-SSI group (n = 882)

Statistic

P value

Postoperative delivery of icu, n (%)

36 (50.7)

195 (22.1)

χ2 = 29.259

< 0.001

Length of ICU stay, day, median (IQR)

0 (0–2)

0 (0–0)

U = 41,004

< 0.001

Length of postoperative stay, day, median (IQR)

13 (8–19)

6 (4–9)

U = 49,486

< 0.001

Medical cost, thousand dollar, median (IQR)

6.9 (3.7–9.7)

2.3 (1.7–3.8)

U = 51,318

< 0.001

30-d mortality, n (%)

2 (3.0%)

2 (0.2%)

 

0.030

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