Table 1.
Characteristics of the Study Population and by Therapeutic Strategy*
| Characteristics | Overall (n = 503) |
Medical therapy (n = 270) |
PCI (n = 180) |
CABG (n = 53) |
p |
|---|---|---|---|---|---|
| Demographics | |||||
| Age (y) | 65 ± 13 | 63 ± 14 | 68 ± 12 | 70 ± 12 | <0.001 |
| Male | 280 (56%) | 147 (54%) | 101 (56%) | 32 (60%) | 0.721 |
| Race | 0.258 | ||||
| Caucasian | 106 (21%) | 52 (19%) | 40 (22%) | 14 (26%) | |
| Black | 63 (13%) | 33 (12%) | 24 (13%) | 6 (11%) | |
| Hispanic | 178 (35%) | 105 (39%) | 55 (31%) | 18 (34%) | |
| Asian | 40 (8%) | 27 (10%) | 11 (6%) | 2 (4%) | |
| Other | 116 (23%) | 53 (20%) | 50 (28%) | 13 (25%) | |
| Laboratory Measurements | |||||
| WBC (1,000/µL) | 8 ± 3 | 8 ± 3 | 8 ± 2 | 9 ± 4 | 0.043 |
| Hemoglobin (g/dL) | 13 ± 2 | 13 ± 2 | 13 ± 2 | 13 ± 2 | 0.763 |
| High RDW | 101 (20%) | 58 (21%) | 27 (15%) | 16 (30%) | 0.037 |
| Platelets (1,000/µL) | 244 ± 87 | 253 ± 95 | 235 ± 66 | 235 ± 103 | 0.068 |
| Tn Max (ng/mL) | 0.01 (0.00–0.12) | 0.00 (0.00–0.06) | 0.01 (0.00–0.42) | 0.04 (0.00–0.45) | 0.022 |
| Creatinine (mg/dL) | 1.0 (0.8–1.3) | 1.0 (0.8–1.3) | 1.1 (0.9–1.3) | 1.1 (1.0–1.8) | 0.025 |
| Anemia | 224 (45%) | 126 (47%) | 75 (42%) | 23 (43%) | 0.570 |
| Angiographic Findings | <0.001 | ||||
| Normal or non obstructive disease | 167 (33%) | 162 (60%) | 5 (3%) | 0 (0%) | |
| 1 vessel-disease | 109 (22%) | 41 (15%) | 62 (34%) | 6 (11%) | |
| 2 vessel-disease | 89 (18%) | 26 (10%) | 52 (29%) | 11 (21%) | |
| ≥ 3 vessel-disease | 138 (27%) | 41 (15%) | 61 (34%) | 36 (68%) | |
| Medical History | |||||
| Heart Failure | 173 (34%) | 97 (36%) | 52 (29%) | 24 (45%) | 0.064 |
| CAD | 287 (57%) | 131 (49%) | 128 (71%) | 28 (53%) | <0.001 |
| HTN | 392 (78%) | 203 (75%) | 144 (80%) | 45 (85%) | 0.209 |
| Diabetes | 218 (43%) | 106 (39%) | 86 (48%) | 26 (49%) | 0.137 |
| Dyslipidemia | 228 (45%) | 114 (42%) | 94 (52%) | 20 (38%) | 0.057 |
| Smoking | 155 (31%) | 80 (30%) | 53 (29%) | 22 (42%) | 0.204 |
| FHx | 106 (21%) | 44 (16%) | 47 (26%) | 15 (28%) | 0.017 |
| Prior Interventions | |||||
| Previous CABG | 72 (14%) | 27 (10%) | 43 (24%) | 2 (4%) | <0.001 |
| Previous PCI | 139 (28%) | 72 (27%) | 57 (32%) | 10 (19%) | 0.163 |
| Diagnosis | 0.006 | ||||
| UA | 406 (81%) | 232 (86%) | 134 (74%) | 40 (75%) | |
| NSTEMI | 97 (19%) | 38 (14%) | 46 (26%) | 13 (25%) |
*
n = 503. Continuous variables are reported as mean ± standard deviation if normally distributed, median (range) if not. Categorical variables are reported as frequency (percentage). WBC = White Blood Cell count; High RDW = Red Blood Cell Distribution Width > 16.3%; Tn Max = Maximal Troponin I; CAD = Coronary Artery Disease; HTN = Hypertension; FHx = Family History of Coronary Artery Disease; CABG = Coronary Artery Bypass Graft; PCI = Percutaneous Coronary Intervention; UA = Unstable Angina; NSTEMI = Non ST Elevation Myocardial Infarction. P values<0.05 are in boldface.