Table I.
Patient characteristics
| Variable | Overall (N = 380) |
No workup (n = 28) |
ECG only (n = 127) |
TTE (n = 208) |
Stress test (n = 12) |
Coronary angiography (n = 5) |
P value |
|---|---|---|---|---|---|---|---|
| Age, years | 68 (55–75) | 52 (34–56) | 68 (53–75) | 69 (59–76) | 70 (63–74) | 73 (59, 76) | <.001 |
| Male sex | 232 (61.1) | 15 (53.6) | 89 (70.1) | 118 (56.7) | 6 (50) | 4 (80) | .081 |
| BMI | 27.8 (24.4–31) | 28 (24–31) | 29 (25–31) | 27 (24–30) | 29 (26–33) | 28 (24–30) | .692 |
| White race | 245 (64.5) | 13 (46.4) | 90 (70.9) | 130 (62.5) | 8 (66.7) | 4 (80) | .126 |
| Hypertension | 329 (86.6) | 14 (50) | 114 (89.8) | 187 (89.9) | 9 (75) | 5 (100) | <.001 |
| Hyperlipidemia | 220 (57.9) | 7 (25) | 76 (59.8) | 122 (58.7) | 10 (83.3) | 5 (100) | <.001 |
| Tobacco abuse | 230 (60.5) | 10 (35.7) | 67 (52.8) | 140 (67.3) | 10 (83.3) | 3 (60) | .001 |
| Diabetes mellitus | 57 (15) | 2 (7.1) | 18 (14.2) | 33 (15.9) | 3 (25) | 1 (20) | .53 |
| Peripheral vascular disease | 97 (25.5) | 3 (10.7) | 34 (26.8) | 54 (26) | 3 (25) | 3 (60) | .152 |
| Baseline creatinine level >1.5 mg/dL | 100 (26.3) | 4 (14.3) | 39 (30.7) | 53 (25.5) | 2 (16.7) | 2 (40) | .326 |
| History of stroke or TIA | 41 (10.8) | 2 (7.1) | 11 (8.7) | 24 (11.5) | 3 (25) | 1 (20) | .299 |
| COPD | 101 (26.6) | 4 (14.3) | 36 (28.3) | 53 (25.5) | 7 (58.3) | 1 (20) | .074 |
BMI, Body mass index; COPD, chronic obstructive pulmonary disease; ECG, electrocardiography; IQR, interquartile range; TIA, transient ischemic attack; TTE, transthoracic echocardiography.
Values are expressed as median (interquartile range) or number (%).