Table 1 Comparison of baseline characteristics in the 1000 subjects by the lowest albumin level within 1 week after admission

Age, years, IQR

53.0(21.0)

47.0(22.0)

< 0.001

Sex (male), n(%)

329(57.8)

304(70.5)

< 0.001

BMI, kg/m², IQR

24.1(3.9)

25.1(4.5)

< 0.001

Etiology, n(%)

< 0.001

Biliary

294(51.7)

169(39.2)

Hyperlipidemia

201(35.3)

205(47.6)

Alcoholic

32(5.6)

26(6.0)

Other

42(7.4)

31(7.2)

Hypertension, n(%)

151(26.5)

99(23.0)

Diabetes mellitus, n(%)

76(13.4)

71(16.5)

Laboratory data at admission, IQR

White blood count, × 10⁹/L

14.0(7.8)

14.0(7.1)

Hematocrit, %

43.2(11.2)

44.4(10.2)

Serum albumin, g/L

30.2(6.2)

35.6(5.9)

< 0.001

Serum urea, mmol/L

9.2(7.7)

7.2(4.9)

< 0.001

Serum creatinine, µmol/L

95.0(130.0)

77.0(57.2)

< 0.001

Serum calcium, mmol/L

1.8(0.4)

2.0(0.4)

< 0.001

Severity scores at admission, n(%)

SIRS score ≥ 2

466(81.9)

332(77.0)

APACHE≥score ≥ 15

133(23.4)

76(17.6)