Table 1 Baseline characteristics of Study Population.

From: A randomized trial of a mobile health intervention to augment cardiac rehabilitation

 

Intervention

Control

Age, years

59.5 (10.7)

59.7 (10.5)

Sex, N (%)

  

Male

75 (67.6%)

78 (71.6%)

Female

36 (32.4%)

31 (28.4%)

Race, N (%)

  

Asian

6 (5.4%)

3 (2.8%)

Black

4 (3.6%)

8 (7.3%)

White

92 (82.9%)

92 (84.4%)

Other

9 (8.1%)

6 (5.5%)

Ethnicity, N (%)

  

Hispanic Ethnicity

2 (1.8%)

1 (0.9%)

Non-Hispanic Ethnicity

104 (93.7%)

104 (95.4%)

Unknown

5 (4.5%)

4 (3.7%)

Study site, N (%)

  

Michigan Medicine

90 (81.1%)

85 (78.0%)

Spectrum Health

21 (18.9%)

24 (22.0%)

Phone type, N (%)

  

iPhone (Apple Watch Series 4)

70 (63.1%)

68 (62.4%)

Android phone (Fitbit Versa 2)

41 (36.9%)

41 (37.6%)

Indication for cardiac rehabilitation, N (%)

  

Percutaneous coronary intervention

58 (2.3%)

47 (43.1%)

Coronary artery bypass grafting

21 (18.9%)

18 (16.5%)

Valve repair or replacement

22 (19.8%)

27 (24.8%)

Percutaneous coronary intervention or coronary artery bypass grafting & valve repair or replacement

3 (2.7%)

3 (2.8%)

Coronary artery disease or acute coronary syndrome, not revascularized

7 (6.3%)

14 (12.8%)

Body mass index, kg/m2, a

30.4 (6.5)

30.9 (7.3)

Comorbidities, N (%)

  

Atrial fibrillation/fluttera

29 (26.1%)

22 (20.2%)

Coronary artery disease/Myocardial infarction

92 (82.9%)

81 (74.3%)

Diabetes mellitusa

31 (27.9%)

31 (28.4%)

Hypertensiona

74 (66.7%)

68 (62.4%)

Heart failure

21 (18.9%)

17 (15.6%)

History of valve repair or replacement

29 (26.1%)

29 (26.6%)

  1. aData available for Michigan Medicine patients only.