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Table 2 Comparison of demographic, clinical characteristics, and outcomes across KILLIP classes in the dataset

From: Interpretable artificial intelligence model for predicting heart failure severity after acute myocardial infarction

Variable

Killip classification

P value

Case number

1 (n = 1005)

2 (n = 468)

3 (n = 72)

4 (n = 29)

 

Sex, Male, n (%)

816(81.2)

356(76.1)

50(69.4)

22(75.9)

0.023

Age(year)

60.5 ± 12.3

68.1 ± 11.5

70.4 ± 10.4

65.4 ± 11.2

< 0.001

BMI, kg/m2

25.7 ± 3.6

25.5 ± 3.6

25.1 ± 3.5

24.5 ± 2.9

0.212

History of hypertension, n (%)

575(57.2)

309(66)

51(70.8)

15(51.7)

0.002

History of hyperlipidemia, n (%)

183(18.2)

63(13.5)

9(12.5)

2(6.9)

0.044

History of diabetes, n (%)

339(33.7)

219(46.8)

36(50)

14(48.3)

< 0.001

History of AF, n (%)

28(2.8)

23(4.9)

36(50)

14(48.3)

< 0.001

Old myocardial infarction, n (%)

101(10)

92(19.7)

3(4.2)

5(17.2)

< 0.001

History of stent implantation, n (%)

105(10.4)

90(19.2)

13(18.1)

4(13.8)

< 0.001

History of CABG, n (%)

9(0.9)

11(2.4)

1(1.4)

1(3.4)

0.121

History of smoking, n (%)

627(62.6)

256(54.7)

36(50)

15(51.7)

0.008

No quitting smoking, n (%)

511(50.8)

189(40.4)

23(31.9)

11(37.9)

0.034

History of CVD, n (%)

101(2.1)

1(5.9)

1(8.3)

2(22.2)

0.123

History of PU, n (%)

29(2.9)

11(2.6)

4(5.6)

0(0)

0.164

GRACE risk score

138.0 ± 29.0

170.1 ± 30.1

203.8 ± 35.8

231.5 ± 33.0

< 0.001

TIMI risk score

3.4 ± 1.7

5.3 ± 2.1

5.6 ± 2.2

6.1 ± 2.7

< 0.001

Blood glucose, mmol/L

6.8 ± 4.3

10.0 ± 47.4

8.6 ± 4.8

9.0 ± 4.3

0.177

HbA1c, %

6.5 ± 1.5

6.9 ± 1.7

7.1 ± 1.6

6.9 ± 1.8

< 0.001

Creatinine, umol/L

74.4 ± 20.3

88.8 ± 56.0

121.0 ± 54.9

114.9 ± 50.6

< 0.001

CCR, mL/min

90.1 ± 45.1

74.1 ± 72.7

51.7 ± 24.4

53.6 ± 26.5

< 0.001

TC, mmol/L

4.2 ± 1.0

4.1 ± 1.0

3.9 ± 1.4

3.9 ± 1.2

0.023

LDL-C, mmol/L

2.6 ± 0.8

2.7 ± 3.4

2.5 ± 1.1

2.2 ± 0.9

0.698

HDL-C, mmol/L

1.0 ± 0.3

1.0 ± 0.3

1.1 ± 0.3

1.1 ± 0.4

0.647

TG, mmol/L

1.9 ± 1.3

1.7 ± 1.0

1.5 ± 0.7

1.3 ± 0.6

< 0.001

UA, mmol/L

348.9 ± 94.1

363.0 ± 116.1

405.0 ± 158.7

416.8 ± 177.1

< 0.001

ALT, IU/L

43.8 ± 59.9

40.5 ± 35.2

70.8 ± 148.1

95.1 ± 123.0

< 0.001

AST, IU/L

95.1 ± 109.9

96.2 ± 122.8

119.4 ± 183.4

190.7 ± 338.1

< 0.001

Peak troponin I, ng/mL

15.5 ± 17.9

36.8 ± 331.1

15.8 ± 19.1

28.6 ± 19.4

0.211

NT-pro BNP, pg/mL

998.0 ± 2257.5

3550.4 ± 5890.4

10567.0 ± 9999.6

9448.9 ± 10009.3

< 0.001

hs-CRP, mg/L

10.9 ± 14.2

16.2 ± 17.0

28.4 ± 18.6

25.2 ± 19.0

< 0.001

IL-6, pg/mL

32.2 ± 82.1

49.3 ± 126.6

79.1 ± 117.3

1874.4 ± 9257.9

< 0.001

Leukocytes, n×103/µL

9.5 ± 3.1

9.9 ± 3.3

11.0 ± 4.5

12.9 ± 4.4

< 0.001

Neutrophils, n×103/µL

7.3 ± 3.6

7.7 ± 3.3

8.7 ± 4.3

10.6 ± 4.2

< 0.001

Lymphocytes, n×103/µL

1.7 ± 0.8

1.6 ± 0.8

1.5 ± 0.9

1.5 ± 0.8

0.006

Monocytes, n×103/µL

0.5 ± 0.2

0.6 ± 0.3

0.7 ± 0.4

0.7 ± 0.5

< 0.001

Platelet, n×103/µL

228.2 ± 63.2

226.7 ± 77.1

236.1 ± 103.1

247.6 ± 115.6

0.357

Hemoglobin, g/L

138.1 ± 17.0

132.7 ± 19.1

98.8 ± 20.8

121.6 ± 19.8

< 0.001

Left atrial diameter, mm

37.5 ± 4.7

38.6 ± 5.8

40.1 ± 5.9

39.6 ± 7.1

< 0.001

LVEDD, mm

51.5 ± 5.1

52.6 ± 6.0

56.8 ± 7.4

54.3 ± 7.0

< 0.001

LVEF, %

57.2 ± 9.0

52.7 ± 11.0

42.3 ± 12.7

41.7 ± 9.8

< 0.001

Length of hospitalization

8.5 ± 3.8

10.3 ± 7.3

15.7 ± 11.4

17.4 ± 13.2

< 0.001

  1. BMI: body mass index; CABG: coronary artery bypass grafting; AF: atrial fibrillation; CVD: cerebrovascular disease; PU: peptic ulcer; GRACE: Global Registry of Acute Coronary Events; TIMI: Thrombolysis in Myocardial Infarction; TC: total cholesterol; LDL-C: low density lipoprotein cholesterol; HDL-C: high density lipoprotein cholesterol; TG: triglyceride; UA: uric acid; ALT: alanine aminotransferase; AST: aspartate aminotransferase; NT-pro BNP: N-terminal pro-B-type natriuretic peptide; hs-CRP: high-sensitivity C-reactive protein; IL-6: interleukin 6; LVEDD: left ventricular end-diastolic diameter; LVEF: left ventricular ejection fraction