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Table 1 Baseline characteristics of 4723 patients with heart failure and diabetes, by hemoglobin A1c (HbA1c) category

From: Association of HbA1c with hospitalization and mortality among patients with heart failure and diabetes

 

HbA1c range

<6.5

6.5–6.9

7–7.9

8–8.9

≥9

(n = 1028)

(n = 600)

(n = 1065)

(n = 706)

(n = 1324)

Age, years

67.1 (12.9)

66.3 (12.4)

65.4 (12.0)

63.7 (11.7)

60.9 (11.5)

Female

53.6

52.0

55.6

52.3

49.2

Black Race

47.2

41.7

41.2

39.7

42.0

Hispanic/Latino Ethnicity

28.7

28.8

29.8

32.2

32.2

Insurance

 Medicaid

28.2

31.2

30.6

33.3

33.5

 Medicare

30.5

27.0

25.7

24.1

18.7

 Private

4.1

4.5

3.4

4.7

4.6

 Self-Pay

18.0

18.8

22.4

24.9

27.7

 Other

19.3

18.5

17.9

13.0

15.4

Diabetes Severity Index

3.5 (1.7)

3.3 (1.7)

3.3 (1.6)

3.5 (1.7)

3.4 (1.7)

Comorbid Conditions

 Myocardial Infarction

10.8

13.0

11.8

11.2

12.2

 Peripheral Vascular Disease

14.7

11.7

13.3

15.0

11.7

 Cerebrovascular Disease

17.8

15.5

16.9

13.2

10.7

 Dementia

2.2

2.3

2.0

1.4

1.1

 Chronic Pulmonary Disease

23.8

26.3

27.2

24.5

25.8

 Rheumatic Disease

2.4

1.8

2.0

1.1

1.4

 Liver Disease

7.5

5.2

4.0

3.7

4.8

 Renal Disease

30.3

19.7

18.6

21.1

21.4

 Malignancy or Tumor

8.6

10.0

6.4

6.5

5.8

Heart Rate, beats/min

74.8 (13.1)

75.2 (12.9)

76.3 (13.2)

77.6 (14.1)

78.2 (13.8)

Systolic Blood Pressure, mmHG

133.7 (22.4)

135.3 (23.0)

134.6 (22.2)

135.6 (23.4)

134.7 (22.9)

Creatinine, mg/dl

1.9 (1.8)

1.5 (1.2)

1.5 (1.2)

1.5 (1.3)

1.5 (1.3)

Hemoglobin, g/dl

11.6 (2.0)

12.0 (1.9)

12.0 (1.9)

12.1 (1.9)

12.2 (2.0)

ACE inhibitor or ARB

55.1

58.2

58.8

56.7

59.9

Beta-Blocker

36.7

34.8

37.5

35.6

34.5

Loop Diuretic

57.9

63.0

62.4

62.3

57.4

Insulin

21.7

25.2

35.8

50.9

62.3

Metformin

14.1

22.2

16.4

18.8

19.5

Sulfonylurea

9.0

11.7

12.4

9.8

10.6

Prior Utilization

 Hospitalization in Prior 90 Days

54.3

45.3

52.8

53.8

58.9

 Hospitalizations, Prior Year

1.5 (2.0)

1.2 (1.8)

1.4 (1.9)

1.4 (1.7)

1.5 (2.0)

 ED Visits, Prior Year

0.6 (1.3)

0.5 (1.1)

0.6 (1.7)

0.5 (1.3)

0.6 (1.3)

 Clinic Visits, Prior Year

6.9 (12.8)

7.3 (15.3)

6.6 (15.0)

5.3 (12.6)

5.5 (12.2)

  1. Values are percentages or mean (standard deviation)