Table 1 Baseline characteristics of non-SSI and SSI patients

Gender (males), n(%)

267(64.0)

248(64.1)

19(63.3)

0.934^c

Age (years), mean ± SD

45.6 ± 15.2

45.4 ± 15.2

46.8 ± 14.5

0.586^a

BMI (kg/m²), mean ± SD

25.6 ± 4.0

25.4 ± 3.9

27.7 ± 3.9

0.005^b*

Location (rural), n(%)

218(52.3)

206(53.2)

12(40.0)

0.162^c

Diabetes mellitus, n(%)

17(4.1)

17(4.4)

0(0.0)

0.241^c

Hypertension, n(%)

29(7.0)

27(7.0)

2(6.7)

0.949^c

Cardiovascular diseases, n(%)

32(7.7)

31(8.0)

1(3.3)

0.354^c

Smoking, n(%)

111(26.6)

101(26.1)

10(33.3)

0.388^c

Alcohol consumption, n(%)

112(26.9)

102(26.4)

10(33.3)

0.406^c

Rüedi and Allgöwer classification

0.786^c

I, n(%)

158(37.9)

148(38.2)

10(33.3)

II, n(%)

197(47.2)

181(46.8)

16(53.3)

III, n(%)

62(14.9)

58(15.0)

4(13.4)

Mechanism (low energy), n(%)

190(45.6)

179(46.3)

11(36.7)

0.310^c

Side (left), n(%)

203(48.7)

188(48.6)

15(50.0)

0.881^c