Table 3 Comparison of severity and complications between the two groups

Hydrothorax, n(%)

47(37.0)

39(15.9)

21.128

< 0.001

ACS

27(21.3)

11(4.5)

25.801

< 0.001

Organ failure, n(%)

Respiratory

96(75.6)

68(27.6)

78.163

< 0.001

Renal

18(14.2)

23(9.3)

1.992

0.158

Cardiovascular

26(20.5)

32(13.0)

3.554

0.059

MODS

48(37.8)

21(8.5)

47.559

< 0.001

Admission to ICU,n(%)

70(55.1)

129(52.4)

0.242

0.623

Length of hospital, d

16.1 ± 9.7

12.9 ± 10.3

-3.490

< 0.001

Medical costs,CNY

64920.73 ± 68965.56

49011.05 ± 52150.54

-2.515

0.012

APACHE II

14.9 ± 6.2

13.2 ± 4.5

-2.914

0.021

CTSI

5.1 ± 0.9

4.6 ± 0.7

-6.687

< 0.001

Ranson

3.72 ± 1.40

3.66 ± 1.36

-0.332

0.740

Death, n(%)

27(21.3)

30(12.2)

5.316

0.021