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Table 1 Characteristics between progression and non-progression groups

From: Machine learning model for predicting acute kidney injury progression in critically ill patients

Variables

Overall

Non-progression (n = 23,581)

Progression (n = 2130)

P value

Gender, n (%)

   

0.005

 Male

15,018 (58.4)

13,836 (58.7)

1182 (55.5)

 

 Female

10,693 (41.6)

9745 (41.3)

948 (44.5)

0.005

Age, median [Q1,Q3]

66.0 [55.0,77.0]

66.0 [55.0,77.0]

65.5 [53.0,76.0]

0.001

Ethnicity, n (%)

   

< 0.001

 Asian

503 (2.0)

470 (2.0)

33 (1.5)

 

 Black

2042 (7.9)

1805 (7.7)

237 (11.1)

 

 Hispanic

718 (2.8)

649 (2.8)

69 (3.2)

 

 Native

12 (0.0)

10 (0.0)

2 (0.1)

 

 Other

656 (2.6)

602 (2.6)

54 (2.5)

 

 Unknown

3106 (12.1)

2835 (12.0)

271 (12.7)

 

 White

18,674 (72.6)

17,210 (73.0)

1464 (68.7)

 

Admissions_type, n (%)

    

 ELECTIVE

4511 (17.5)

4342 (18.4)

169 (7.9)

< 0.001

 EMERGENCY

20,450 (79.5)

18,559 (78.7)

1891 (88.8)

 

 URGENT

750 (2.9)

680 (2.9)

70 (3.3)

 

ICU_type, n (%)

   

< 0.001

 CCU

3647 (14.2)

3288 (13.9)

359 (16.9)

 

 CSRU

6500 (25.3)

6253 (26.5)

247 (11.6)

 

 MICU

8679 (33.8)

7681 (32.6)

998 (46.9)

 

 SICU

3937 (15.3)

3561 (15.1)

376 (17.7)

 

 TSICU

2948 (11.5)

2798 (11.9)

150 (7.0)

 

Cardiac surgery, n (%)

20,596 (80.1)

19,043 (80.8)

1553 (72.9)

< 0.001

Respiratory failure, n (%)

9381 (36.5)

8025 (34.0)

1356 (63.7)

< 0.001

Mechanical ventilation, n (%)

7380 (28.7)

6650 (28.2)

730 (34.3)

< 0.001

MODS, n (%)

15,961 (62.1)

13,958 (59.2)

2003 (94.0)

< 0.001

Spesis, n (%)

4358 (16.9)

3476 (14.7)

882 (41.4)

< 0.001

Vasoactive_drugs, n (%)

8098 (31.5)

7425 (31.5)

673 (31.6)

0.937

Vital signs, mean (SD)

    

 Blood pressure (mmHg)

76.6 (16.4)

76.7 (16.0)

76.3 (20.3)

0.527

 Heart rate

86.4 (18.2)

86.1 (17.9)

90.2 (21.2)

< 0.001

 Respiratory rate

19.2 (6.0)

19.1 (5.9)

20.3 (6.9)

< 0.001

 Temperature (\(^\circ \mathrm{C}\))

36.9 (0.6)

36.9 (0.6)

36.8 (0.7)

< 0.001

Laboratory variables, mean (SD)

    

 Anion gap (mEq/l)

13.5 (3.6)

13.3 (3.5)

15.4 (4.5)

< 0.001

 PaO2 (mmHg)

128.0 (77.8)

128.5 (77.7)

123.5 (79.7)

0.016

 pH

7.4 (0.1)

7.4 (0.1)

7.4 (0.1)

< 0.001

 Glucose (mg/dl)

137.0 (72.2)

136.3 (68.4)

144.9 (105.2)

< 0.001

 Lactate (mmol/l)

2.1 (1.7)

2.1 (1.6)

2.5 (2.3)

< 0.001

 Sodium (mmol/l)

138.4 (4.7)

138.5 (4.6)

137.6 (5.6)

< 0.001

 Potassium (mmol/l)

4.2 (0.6)

4.2 (0.6)

4.3 (0.8)

< 0.001

 BUN (mg/dl)

24.8 (18.5)

23.5 (17.0)

39.0 (26.2)

< 0.001

 Creatinine (mg/dl)

1.2 (1.1)

1.1 (0.9)

2.4 (2.0)

< 0.001

 FST (ml/h)

107.8 (112.9)

108.8 (113.1)

93.6 (108.6)

< 0.001