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Table 1 Characteristics of included HF patients between derivation and validation cohort

From: Electronic medical record-based model to predict the risk of 90-day readmission for patients with heart failure

Characteristic

Derivation cohort (n = 246)

Validation Cohort (n = 104)

p-value

Age (years) [mean ± SD]

67.7 ± 12.3

69.0 ± 12.9

0.36

Men [n (%)]

153 (62.2)

63 (60.6)

0.87

NYHA III/IV at Discharge [n (%)]

203 (82.5)

89 (85.6)

0.78

Infection [n (%)]

61 (24.7)

24 (23.1)

0.84

Ischemia [n (%)]

66 (26.8)

36 (34.6)

0.18

Cardiac overload [n (%)]

43 (17.5)

11 (10.6)

0.14

Hypertension [n (%)]

106 (43.1)

40 (48.1)

0.45

Arrhythemia [n (%)]

94 (38.2)

44 (42.3)

0.55

Myocardial infarction [n (%)]

51 (20.7)

19 (18.2)

0.70

Cerebral infarction [n (%)]

38 (15.4)

21 (20.2)

0.35

Chronic kidney disease [n (%)]

81 (32.9)

36 (34.6)

0.86

Chronic liver disease [n (%)]

49 (19.9)

27 (26.0)

0.27

Type 2 diabetes [n (%)]

69 (28.5)

36 (34.6)

0.31

COPD [n (%)]

22 (9.0)

12 (11.5)

0.58

Previous PCI [n (%)]

34 (13.8)

19 (18.3)

0.37

Left Ventricular Ejection Fraction [Median (IQR)]

36.5 (27.0, 54.0)

35 (26.0, 49.3)

0.24

Charlson Comorbidity Index [Median (IQR)]

2 [1, 2]

2 [1, 3]

0.80

Length of hospital stay (days) [Median (IQR)]

9 (7, 11.75)

9 (6.0, 11.0)

0.26

  1. COPD chronic obstructive pulmonary disease, PCI percutaneous coronary intervention, IQR interquartile range