Table 2 Characteristics of infected and non-infected patients

Age (year)

67.6 ± 17.7

70.7 ± 18.3

68.5 ± 19.3

63 ± 18.5

60.5 ± 14.7

79.5 ± 13.8^*

69.9 ± 18.3

Gender (M/F)

81/67

157/51

11/8

14/9

11/4

11/4

204/76

Temperature abnormalities, n, (%)

58 (39.2)

107 (51.4)^*

13 (68.4)^*

14 (60.9)

7 (46.7)

7 (46.7)

147 (52.5)^*

WBC abnormalities, n, (%)

37 (25.0)

62 (29.8)

8 (42.1)

11 (47.8)^*

8 (53.3)^*

3 (20.0)

92 (32.9)

NE abnormalities, n, (%)

105 (70.9)

141 (67.8)

10 (52.6)

23 (100)^**

13 (86.7)

9 (60.0)

196 (70.0)

APACHE II score

18.3 ± 5.2

21.3 ± 6.1^***

21.5 ± 8.4^*

20.5 ± 6.9

18.2 ± 6.2

21.6 ± 4.3^*

21.1 ± 6.2^***

NLCR

11.7 ± 13.5

11.3 ± 11.7

9.8 ± 8.5

17 ± 31.1

14.9 ± 11.4

10.8 ± 11.1

11.9 ± 14.1

PCT (ng/ml)

0.9 ± 2.5

4.3 ± 14.6^*

5.3 ± 10.1

21.3 ± 35.1^***

0.8 ± 1.3

1 ± 1.3

5.4 ± 16.9^***

CRP (mg/ml)

46.6 ± 52.1

72 ± 78.5^*

42.9 ± 40.9

117.4 ± 99.9^***

70.8 ± 64.9

59.5 ± 68.6

73.4 ± 78.7^***

Blood lactate (mmol/l)

1.4 ± 1.3

1.6 ± 1.1

2.4 ± 3.2

2 ± 1.1

1.6 ± 0.9

1.7 ± 0.9

1.8 ± 1.3^*

Surgery, n, (%)

41 (27.7)

47 (22.6)

7 (36.8)

12 (52.2)^**

11 (73.7)^***

0 (0)^*

77 (27.5)