Machine Learning Models of Acute Kidney Injury Prediction in Acute Pancreatitis Patients

Table 1

The continuous variable characteristics of AP patients.

No.	Variable code	Non-AKI group ()	AKI group ()	values
	AKI stage (count, %)
	Stage 1		13 (16.25%)
	Stage 2		37 (46.25%)
	Stage 3		30 (37.50)
1	Age (year)	45.85 (37.00, 54.00)	46.86 (39.62, 51.55)	0.559
2	AMY (unit)	422.53 (77.00, 457.00)	773.33 (118.25, 840.75)	0.098
3	LPS (unit)	1132.58 (240.00, 1234.00)	1750.73 (330.25, 1442.25)	0.087
4	TG (mmol/L)	5.76 (1.00, 5.70)	7.034625 (2.30, 6.89)	0.300
5	Chol (mmol/L)	4.841 (3.08, 5.60)	4.58 (2.30, 6.89)	0.533
6	WBC (10^9/L)	12.54 (9.10, 14.80)	12.02 (8.35, 14.25)	0.412
7	CRP (mg/L)	155.54 (94.10, 213.10)	189.22 (147.35, 236.90)	0.012
8	IL-6 (pg/mL)	156.96 (44.35, 161.15)	283.66 (105.50, 174.50)	0.08
9	PCT (μg/L)	2.17 (0.21, 1.99)	13.61 (1.71, 16.98)	<0.001
10	TBIL (μmol/L)	24.51 (14.60, 28.70)	45.21 (18.85, 51.53)	<0.001
11	ALT (U/L)	65.75 (20.00, 59.00)	62.35 (22.25, 65.50)	0.82
12	Hb (g/L)	125.39 (109.00, 141.00)	114.75 (90.00, 137.25)	0.006
13	PLT (10^9/L)	174.89 (126.00, 215.00)	128.98 (84.50, 179.75)	<0.001
14	PT (s)	13.56 (12.20, 13.70)	13.59 (12.23, 14.48)	0.971
15	BMI	25.37 (23.00, 27.00)	26.60 (24.60, 29.08)	0.005
16	APACHE II	9.87 (7.00, 13.00)	18.28 (12.00, 17.00)	<0.001
17	IAP (mmHg)	7.26 (5.00, 10.00)	14.11 (12.00, 17.00)	<0.001

Abbreviations: AMY: serum amylase; LPS: serum lipase; TG: triglycerides; Chol: cholesterol; WBC: white cell count; CRP: c-reactive protein; IL-6: interleukin-6; PCT: procalcitonin; TBIL: total bilirubin; ALT: alanine aminotransferase; Hb: hemoglobin; PLT: platelet; PT: prothrombin time; BMI: body mass index; APACHE II: Acute Physiology and Chronic Health Evaluation II; IAP: intra-abdominal pressure.