Table 1.
>Patient Demographics According to Study Recruitment at the Treadmill Test and Catheterization Laboratories
| Characteristic | Participants (n) | Nonparticipants (n) | P Value |
|---|---|---|---|
| Treadmill test, % | 79.8 (375) | 20.2 (95) | |
| Race/ethnicity, % | |||
| Black | 76.9 (103) | 23.1 (31) | .61 |
| Hispanic | 81.1 (30) | 18.9 (7) | |
| White | 80.9 (242) | 19.1 (57) | |
| Mean age, y | 55.2 | 57.6 | .10 |
| Coronary Angiography | 78.1 (306) | 21.9 (86) | |
| Race/ethnicity, % | |||
| Black | 69.5 (57) | 30.5 (25) | .04 |
| Hispanic | 69.2 (18) | 30.8 (8) | |
| White | 81.3 (231) | 18.7 (53) | |
| Mean age, y | 61.3 | 63.4 | .11 |