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Table 1 Characteristics of ABI reliability study subjects compared with the ARIC study cohort

From: The reliability of the ankle-brachial index in the Atherosclerosis Risk in Communities (ARIC) study and the NHLBI Family Heart Study (FHS)

 

ARIC baseline survey

ARIC visit 3

Characteristic

ARIC Minneapolis and Forsyth County

(N = 8044)

ABI reliability study

(N = 119)

ARIC Minneapolis and Forsyth County

(N = 6839)†

ABI reliability study

(N = 119)

Age, y*

54.2 (5.79)

55.0 (5.68)

60.2 (5.73)

61.0 (5.67)

Female, %

52.8

58.8

53.4

58.8

Race/ethnicity, %

    

   White

93.3

84.0§

94.5

84.0§

   African American

6.3

16.0

5.1

16.0

   American or Alaskan Indian

0.1

0

0.1

0

   Asian or Pacific Islander

0.3

0

0.3

0

Field center, %

    

   Forsyth County, NC

50.2

64.7‡

48.9

64.7§

   Minneapolis, Minn

49.8

35.3

51.1

35.3

Weight, kg*

76.0 (16.21)

75.7 (15.63)

78.1 (16.79)

78.4 (17.12)

Body mass index, kg/m2*

26.7 (4.73)

27.0 (4.78)

27.6 (5.03)

28.1 (5.34)

Diabetes, %

6.7

7.6

12.0

11.8

Smoking status, %

    

   Current

26.8

23.5

18.2

19.3

   Former

35.7

33.6

44.8

42.9

   Never

37.5

42.9

37.0

37.8

Hypertension, %

26.6

26.9

34.4

35.3

Coronary heart disease, %

4.6

18.0§

6.8

23.7§

Ankle brachial index*

1.14 (0.130)

1.13 (0.137)

1.19 (0.150)

1.17 (0.150)

  1. *Numbers presented are mean (SD).
  2. † ARIC participants with a visit 3 (6-year follow-up); for the ABI, N = 2295.
  3. ‡ 0.001 ≤ p < 0.01 for chi-square test comparing sample to source study population.
  4. § p < 0.001