Table 1. Patient Characteristics.
| Characteristic | No. (%) | P value | |||
|---|---|---|---|---|---|
| Total (N = 2611) | Appropriate (n = 778) | Rarely appropriate (n = 272) | May be appropriate (n = 1561) | ||
| Age, mean (SD), y | 66.3 (7.6) | 66.9 (7.8) | 65.2 (7.5) | 66.2 (7.6) | .002 |
| Men | 2577 (98.7) | 762 (97.9) | 271 (99.6) | 1544 (98.9) | .05 |
| Race/ethnicity | |||||
| White | 2238 (85.7) | 680 (87.4) | 230 (84.6) | 1328 (85.1) | .58 |
| African-American | 309 (11.8) | 81 (10.4) | 35 (12.9) | 193 (12.4) | |
| Other | 64 (2.5) | 17 (2.1) | 7 (2.5) | 40 (2.6) | |
| Comorbidity | |||||
| Prior MI | 947 (36.3) | 315 (40.5) | 78 (28.7) | 554 (35.5) | .001 |
| Prior PCI | 1151 (44.1) | 376 (48.3) | 103 (37.9) | 671 (43.0) | .005 |
| Prior CABG | 557 (21.3) | 245 (31.5) | 32 (11.8) | 280 (17.9) | <.001 |
| Heart failure | 541 (20.7) | 197 (25.3) | 33 (12.1) | 311 (19.9) | <.001 |
| Diabetes | 1324 (50.7) | 431 (55.4) | 135 (49.6) | 758 (48.6) | .007 |
| Hypertension | 2372 (90.8) | 726 (93.3) | 237 (87.1) | 1409 (90.3) | .004 |
| Dyslipidemia | 2419 (92.6) | 730 (93.8) | 251 (92.3) | 1438 (92.1) | .32 |
| Hemodialysis | 60 (2.3) | 9 (1.2) | 11 (4.0) | 40 (2.6) | .01 |
| Cerebrovascular disease | 463 (17.7) | 161 (20.7) | 42 (15.4) | 260 (16.7) | .03 |
| Peripheral arterial disease | 517 (19.8) | 175 (22.5) | 59 (21.7) | 283 (18.1) | .03 |
| Chronic lung disease | 720 (27.6) | 197 (25.3) | 67 (24.6) | 456 (29.2) | .07 |
| Tobacco use | 1800 (68.9) | 534 (68.6) | 183 (67.3) | 1083 (69.4) | .77 |
Abbreviations: CABG, coronary artery bypass grafting; MI, myocardial infarction; PCI, percutaneous coronary intervention.