Table 1 Baseline characteristics of all enrolled patients with cardiovascular diseases.

n (%)

5765

3523 (61.1)

2242 (38.9)

Age, years old

66.5 ± 14.4

65.7 ± 13.8

67.7 ± 15.1

 < 0.001

SpO2 at awakening, %

94.2 ± 2.2

94.3 ± 2.0

94.0 ± 2.6

 < 0.001

Systolic blood pressure, mmHg

122.0 ± 18.6

122.9 ± 18.2

120.6 ± 19.2

 < 0.001

Diastolic blood pressure, mmHg

70.7 ± 12.8

71.6 ± 12.9

69.2 ± 12.5

 < 0.001

Pulse pressure, mmHg

51.3 ± 15.6

51.2 ± 15.3

51.4 ± 16.1

0.692

Pulse rate, bpm

72.7 ± 14.6

71.7 ± 14.4

74.3 ± 14.8

 < 0.001

BMI, kg/m2

23.4 ± 3.9

23.8 ± 3.6

22.9 ± 4.1

 < 0.001

WBC, /μL

5964 ± 2031

6104 ± 1970

5745 ± 2105

 < 0.001

Hb, g/dL

13.2 ± 2.0

13.7 ± 2.0

12.5 ± 3.7

 < 0.001

HbA1c, %

6.1 ± 0.8

6.2 ± 0.9

6.0 ± 0.8

 < 0.001

Serum creatinin, mg/dL

1.25 ± 1.66

1.42 ± 1.84

0.97 ± 1.31

 < 0.001

Serum sodium, mEq/L

140.7 ± 2.8

140.5 ± 2.8

141.0 ± 2.8

 < 0.001

NT-proBNP, pg/mL

2855 ± 13,014

2899 ± 13,377

2787 ± 12,427

0.759

CTR (chest X-ray), %

51.1 ± 7.1

49.7 ± 6.6

53.4 ± 7.5

 < 0.001

LVEF, %

60.7 ± 14.7

58.9 ± 14.9

63.5 ± 13.9

 < 0.001

3%ODI < 5, (%)

2067 (35.9)

1092 (31.0)

975 (43.5)

 < 0.001

(Mantel–Haenszel test)

5 ≤ 3%ODI < 15, (%)

2426 (42.1)

1495 (42.4)

931 (41.5)

15 ≤ 3%ODI < 30, (%)

975 (16.9)

704 (20.0)

271 (12.1)

30 ≤ 3%ODI, (%)

297 (5.2)

232 (6.6)

65 (2.9)