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Table 2 Baseline characteristics of the survival and non-survival groups based on 365-day mortality

From: J-shaped association between blood urea nitrogen-to-creatinine ratio and mortality in critically ill patients with acute pancreatitis: a retrospective cohort study using the MIMIC-IV database

 

Total

(n = 850)

Survival

(n = 672)

Non-survival

(n = 178)

P

Age, years

59.61 ± 17.54

57.29 ± 17.23

68.35 ± 15.94

 < 0.001

Gender, n (%)

   

0.282

 Female

352 (41.41)

272 (40.48)

80 (44.94)

 

 Male

498 (58.59)

400 (59.52)

98 (55.06)

 

Weight, kg

86.08 ± 24.01

86.89 ± 24.82

83.01 ± 20.44

0.032

WBC, K/µL

13.83 ± 8.09

13.43 ± 7.57

15.34 ± 9.67

0.015

RBC, m/µL

3.71 ± 0.81

3.76 ± 0.79

3.56 ± 0.87

0.004

Platelet, K/µL

211.59 ± 127.27

213.78 ± 124.90

203.34 ± 135.91

0.331

Hemoglobin, g/dL

11.32 ± 2.37

11.46 ± 2.33

10.78 ± 2.45

 < 0.001

RDW, %

14.95 ± 1.94

14.67 ± 1.70

15.99 ± 2.39

 < 0.001

Sodium, mmol/L

138.24 ± 5.58

138.06 ± 5.29

138.88 ± 6.53

0.124

Potassium, mmol/L

4.12 ± 0.82

4.07 ± 0.77

4.29 ± 0.96

0.006

Calcium, mg/dL

7.88 ± 1.06

7.89 ± 1.03

7.83 ± 1.19

0.490

Chloride, mmol/L

104.26 ± 6.88

104.12 ± 6.58

104.78 ± 7.90

0.313

Glucose, mg/dL

152.65 ± 108.73

152.11 ± 111.66

154.70 ± 97.13

0.777

Anion gap, mmol/L

16.08 ± 5.21

15.62 ± 4.92

17.82 ± 5.88

 < 0.001

PT, sec

16.56 ± 9.58

16.25 ± 10.12

17.72 ± 7.08

0.068

PTT, sec

34.71 ± 15.98

33.45 ± 14.50

39.50 ± 19.97

 < 0.001

ALT, u/dL

224.71 ± 797.05

227.48 ± 863.79

214.23 ± 467.48

0.844

AST, u/dL

364.55 ± 1488.38

331.47 ± 1392.31

489.42 ± 1804.75

0.208

BUN, mg/dL

26.88 ± 24.43

23.44 ± 21.50

39.85 ± 29.93

 < 0.001

Creatinine, mg/dL

1.62 ± 1.79

1.50 ± 1.72

2.10 ± 1.96

 < 0.001

BUN/Cr ratio

18.86 ± 10.51

17.91 ± 9.84

22.46 ± 12.08

 < 0.001

SOFA score

5.63 ± 4.16

5.01 ± 3.82

7.98 ± 4.54

 < 0.001

APS III score

51.02 ± 24.35

46.77 ± 21.88

67.08 ± 26.47

 < 0.001

SAPS II score

35.82 ± 16.17

32.65 ± 14.59

47.80 ± 16.26

 < 0.001

Heart rate, beats/minute

98.50 ± 21.98

98.78 ± 22.12

97.46 ± 21.47

0.476

Respiratory rate, breath/minute

21.09 ± 6.78

21.04 ± 6.81

21.29 ± 6.66

0.657

AKI, n (%)

   

 < 0.001

 No

287 (33.76)

252 (37.50)

35 (19.66)

 

 Yes

563 (66.24)

420 (62.50)

143 (80.34)

 

Hypertension, n (%)

   

0.003

 No

446 (52.47)

335 (49.85)

111 (62.36)

 

 Yes

404 (47.53)

337 (50.15)

67 (37.64)

 

Type 2 DM, n (%)

   

0.728

 No

620 (72.94)

492 (73.21)

128 (71.91)

 

 Yes

230 (27.06)

180 (26.79)

50 (28.09)

 

Heart failure, n (%)

   

0.084

 No

714 (84.00)

572 (85.12)

142 (79.78)

 

 Yes

136 (16.00)

100 (14.88)

36 (20.22)

 

Myocardial infarction, n (%)

   

0.130

 No

826 (97.18)

656 (97.62)

170 (95.51)

 

 Yes

24 (2.82)

16 (2.38)

8 (4.49)

 

Malignant tumors, n (%)

   

0.003

 No

774 (91.06)

622 (92.56)

152 (85.39)

 

 Yes

76 (8.94)

50 (7.44)

26 (14.61)

 

Stroke, n (%)

   

0.233

 No

795 (93.53)

632 (94.05)

163 (91.57)

 

 Yes

55 (6.47)

40 (5.95)

15 (8.43)

 

Obese, n (%)

   

0.006

 No

747 (87.88)

580 (86.31)

167 (93.82)

 

 Yes

103 (12.12)

92 (13.69)

11 (6.18)

 

Respiratory failure, n (%)

   

 < 0.001

 No

533 (62.71)

448 (66.67)

85 (47.75)

 

 Yes

317 (37.29)

224 (33.33)

93 (52.25)

 

Sepsis, n (%)

   

 < 0.001

 No

323 (38.00)

284 (42.26)

39 (21.91)

 

 Yes

527 (62.00)

388 (57.74)

139 (78.09)

 

CRRT, n (%)

   

 < 0.001

 No

762 (89.65)

632 (94.05)

130 (73.03)

 

 Yes

88 (10.35)

40 (5.95)

48 (26.97)

 

Beta-blocker, n (%)

   

0.380

 No

426 (50.12)

342 (50.89)

84 (47.19)

 

 Yes

424 (49.88)

330 (49.11)

94 (52.81)

 

Metformin, n (%)

   

0.229

 No

827 (97.29)

651 (96.88)

176 (98.88)

 

 Yes

23 (2.71)

21 (3.12)

2 (1.12)

 

Octreotide, n (%)

   

0.006

 No

782 (92.00)

627 (93.30)

155 (87.08)

 

 Yes

68 (8.00)

45 (6.70)

23 (12.92)

 

Statin, n (%)

   

0.314

 No

782 (92.00)

615 (91.52)

167 (93.82)

 

 Yes

68 (8.00)

57 (8.48)

11 (6.18)

 

Vasopressin, n (%)

   

 < 0.001

 No

713 (83.88)

611 (90.92)

102 (57.30)

 

 Yes

137 (16.12)

61 (9.08)

76 (42.70)

 

Ventilation, n (%)

   

0.117

 No

200 (23.53)

166 (24.70)

34 (19.10)

 

 Yes

650 (76.47)

506 (75.30)

144 (80.90)

 
  1. Continuous variables are expressed as mean ± standard deviation, and categorical variables are expressed as number (%)
  2. BUN blood urea nitrogen, Cr creatinine, WBC white blood cell, RBC red blood cell, RDW red blood cell distribution width, PT prothrombin time, PTT partial thromboplastin time, ALT alanine aminotransferase, AST aspartate transaminase, SOFA sequential organ failure assessment, APS III acute physiology score III, SAPS II simplified acute physiology score II, AKI acute kidney injury, COPD chronic obstructive pulmonary disease, DM diabetes mellitus, CRRT continuous renal replacement therapy