Table 1 Results of univariate logistic regression analysis examining the relationship between variables and the occurrence of AKI in patients with MSAP and SAP within the training cohort

Male

1.31

0.92–1.87

Age, (years)

1.01

1.00–1.02

Hypertension

1.55

1.10–2.19

Diabetes

1.17

0.82–1.69

Circulatory disease

0.94

0.47–1.91

CKD

1.74

0.74–4.10

Cancer history

0.68

0.24–1.88

Smoking

1.25

0.90–1.74

Drinking

1.20

0.86–1.69

AP etiology

 Biliary AP

Reference

 Hyperlipidemic AP

0.87

0.59–1.29

 Alcoholic AP

0.97

0.48–1.94

 Other

0.53

0.25–1.12

 Mixed AP

1.59

0.97–2.59

BMI, (kg/m²)

1.02

0.98–1.05

Vital sign

 RR, (bpm)

1.05

1.02–1.07

 T, (℃)

1.03

0.82–1.30

 Shock Index

17.63

7.27–42.79

Laboratory result

WBC, (10⁹/L)

 [4, 12]

Reference

 < 4 or > 12

0.72

0.52–1.01

NLR

1

1.00–1.01

PLR

1

1.00–1.00

SII

1

1.00–1.00

Hb, (g/L)

 [120, 160]

Reference

 < 120

1.35

0.89–2.05

 > 160

2.12

1.27–3.53

HCT

 [0.3, 0.5]

Reference

 < 0.3

2.19

1.26–3.82

 > 0.5

5.38

2.18–13.32

PLT, (10⁹/L)

 [150, 300]

Reference

 < 150

2.05

1.45–2.88

 > 300

1.34

0.63–2.85

CRP, (mg/L)

1.004

1.002–1.005

Glucose, (mmol/L)

1.08

1.04–1.12

Lactate, (mmol/L)

1.24

1.08–1.42

PCT, (ng/mL)

1.11

1.07–1.14

ALT, (IU/L)

1.001

1.000–1.003

AST, (IU/L)

1.003

1.001–1.005

ALP, (IU/L)

0.996

0.996–1.003

γ-GT, (IU/L)

1

0.999–1.001

Alb, (g/L)

0.95

0.92–0.98

Prealbmin, (mg/L)

0.998

0.995–1.001

TB, (μmol/L)

1.01

1.001–1.013

DB, (μmol/L)

1.02

1.01–1.03

SCr, (μmol/L)

1.36

1.27–1.44

BUN, (mmol/L)

1.005

1.004–1.006

Na⁺, (mmol/L)

 [135, 145]

Reference

 < 135

1.61

1.07–2.42

 > 145

3.3

1.85–5.88

K⁺, (mmol/L)

 [3.5, 5.5]

Reference

 < 3.5

0.49

0.31–0.76

 > 5.5

5.6

1.78–17.62

Cl⁻, (mmol/L)

 [96, 108]

Reference

 < 96

1.66

0.66–4.14

 > 108

2.33

1.56–3.48

P < 0.8 mmol/L

0.71

0.51–0.99

Ca²⁺, (mmol/L)

0.12

0.07–0.23

CK-MB > 4 ng/mL

5.78

3.75–8.90

MYO > 70 ng/mL

7.13

4.84–10.51

TnI > 30 pg/mL

2.58

1.82–3.65

pH

 [7.35, 7.45]

Reference

 < 7.35

2.27

1.58–3.28

 > 7.45

0.61

0.26–1.43

PaO₂, (Kpa)

1.01

0.98–1.05

PaCO₂, (Kpa)

0.8

0.67–0.96

BE, (mmol/L)

 [− 3, 3]

Reference

 > 3

0.8

0.17–3.81

 < − 3

2.54

1.77–3.63

TG, (mmol/L)

1.02

1.01–1.03

TC, (mmol/L)

1.01

0.97–1.05

APTT, (s)

 [35, 45]

Reference

 < 35

0.69

0.47–1.02

 > 45

4.07

1.92–8.65

PT, (s)

 [10, 16]

Reference

 > 16

4.53

2.70–7.62

TT, (s)

 [14, 21]

Reference

 < 14

1.32

0.67–2.60

 > 21

2.71

1.64–4.47

Fg, (g/L)

 [1.8, 3.5]

Reference

 > 3.5

1.15

0.74–1.78

 < 1.8

2.31

0.55–9.78

FDP-1, (mg/L)

1.02

1.01–1.04

d-Dimer, (mg/L)

1.09

1.05–1.12