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Table 2 Distribution of laboratory predictive variables of in-hospital mortality

From: Physiological parameters for Prognosis in Abdominal Sepsis (PIPAS) Study: a WSES observational study

Variables

Total patients

Dead

Survivors

RR

p value

n 3137

n 280

n 2857

(100%)

(8.9%)

(91.1%)

Blood oxygen saturation level (SpO2) (%) in air

 > 92

2782 (88.7)

152 (54.3)

2630 (92.1)

0.15 (0.12–0.19)

< 0.001

 90–91

198 (6.3)

66 (23.6)

132 (4.6)

4.58 (3.62–5.79)

< 0.001

 85–89

99 (3.1)

41 (14.6)

58 (2.0)

5.26 (4.04–6.85)

< 0.001

 < 85

21 (0.7)

9 (3.2)

12 (0.4)

4.93 (2.97–8.18)

< 0.001

 Not reported

37 (1.2)

12 (4.3)

25 (0.9)

NA

NA

WBC (cells/mm3)

 > 12,000

1950 (62.2)

182 (65.0)

1768 (61.9)

1.13 (0.89–1.43)

0.30

 4000–12,000

1043 (33.2)

63 (22.5)

980 (34.3)

0.58 (0.44–0.76)

< 0.001

 < 4000

94 (3.0)

29 (10.4)

65 (2.3)

3.74 (2.70–5.18)

< 0.001

 Not reported

50 (1.6)

6 (2.1)

44 (1.5)

NA

NA

Platelet count (cells/ mm3)

 > 150,000

2606 (83.1)

183 (65.4)

2423 (84.8)

0.38 (0.31–0.49)

< 0.001

 50,000–1,500,000

387 (12.3)

73 (26.1)

314 (11.0)

2.51 (1.96–3.20)

< 0.001

 < 50,000

32 (1.0)

18 (6.4)

14 (0.5)

6.67 (4.81–9.24)

< 0.001

 Not reported

112 (3.6)

6 (2.1)

106 (3.7)

NA

NA

INR

 > 3

23 (0.7)

12 (4.3)

11 (0.4)

6.06 (4.03–9.11)

< 0.001

 1.2–3

296 (9.4)

72 (25.7)

224 (7.8)

3.32 (2.61–4.22)

< 0.001

 < 1.2

1954 (62.3)

149 (53.2)

1805 (63.2)

0.69 (0.55–0.86)

0.001

 Not reported

864 (27.5)

47 (16.8)

817 (28.6)

NA

NA

CRP (mg/l)

 > 200

450 (14.3)

70 (25.0)

380 (13.3)

1.99 (1.55–2.56)

< 0.001

 101–200

462 (14.7)

51 (18.2)

411 (14.4)

1.29 (0.97–1.72)

0.08

 5–100

946 (30.2)

69 (24.6)

877 (30.7)

0.76 (0.58–0.98)

0.04

 < 5

258 (8.2)

3 (1.1)

255 (8.9)

0.12 (0.04–0.37)

< 0.001

 Not reported

1471 (46.9)

157 (56.1)

1314 (46.0)

NA

NA

Procalcitonin (ng/ml)

 

 > 10

85 (2.7)

31 (11.1)

54 (1.9)

4.47 (3.30–6.06)

< 0.001

 0.5–10

260 (8.3)

42 (15.0)

218 (7.6)

1.96 (1.44–2.64)

< 0.001

 < 0.5

100 (3.2)

3 (1.1)

97 (3.4)

0.33 (0.11–1.01)

0.03

 Not reported

2692 (85.8)

204 (72.9)

2488 (87.1)

NA

NA

Lactate (mmol/l)

 >4

139 (4.4)

61 (21.8)

78 (2.7)

6.01 (4.79–7.54)

< 0.001

 1–4

615 (19.6)

86 (30.7)

529 (18.5)

1.82 (1.43–2.31)

< 0.001

 < 1

136 (4.3)

6 (2.1)

130 (4.6)

0.48 (0.22–1.07)

0.06

 Not reported

2247 (71.6)

127 (45.4)

2120 (74.2)

NA

NA

  1. All p values calculated using two-sided chi-square test
  2. RR: risk ratio, NA: not applicable, WBC: white blood count, INR: international normalised ratio, CRP; C-reactive protein