Patient Characteristics
| Characteristic | All | Stress-only | Stress and rest | P |
| Total subjects | 100 | 69 | 31 | |
| Age (y) | 53.4 ± 11.3 | 52.9 ± 8.7 | 54.5 ± 10.4 | 0.21 |
| Women | 60 (60) | 44 (44) | 16 (16) | 0.25 |
| Race/ethnicity | 0.086 | |||
| African-American | 21 (21) | 12 (17) | 9 (29) | |
| Asian | 5 (5) | 4 (6) | 1 (3) | |
| Caucasian | 17 (17) | 8 (12) | 9 (29) | |
| Hispanic | 53 (53) | 42 (61) | 11 (35) | |
| Other | 4 (4) | 3 (4) | 1 (3) | |
| BMI | ||||
| kg/m2 | 27.9 ± 3.4 | 27.5 ± 3.4 | 28.8 ± 3.3 | 0.043 |
| Range | 18.9–34.8 | 18.9–34.8 | 19.5–33.8 | |
| Diabetes mellitus | 15 (15) | 9 (13) | 6 (19) | 0.66 |
| Hypertension | 53 (53) | 37 (54) | 16 (52) | 0.85 |
| Hyperlipidemia | 40 (40) | 23 (33) | 17 (55) | 0.042 |
| Current smoking | 11 (11) | 8 (12) | 3 (10) | 0.78 |
| Family history of premature heart disease | 31 (31) | 20 (29) | 11 (35) | 0.52 |
| No risk factors | 15 (15) | 13 (19) | 2 (6) | 0.11 |
| Prior myocardial infarction | 0 | 0 | 0 | |
| Stress type | 1.00 | |||
| Exercise, Bruce protocol | 84 (84) | 58 (84) | 26 (84) | |
| Adenosine | 3 (3) | 2 (3) | 1 (3) | |
| Regadenoson | 13 (13) | 9 (13) | 4 (13) |
Qualitative data are expressed as numbers, followed by percentages in parentheses; continuous data are expressed as mean ± SD.