Table 1.
Participants' Sociodemographic, Clinical, and Physician Factors by Patient Decision Involvement
| Patient's Perceived Decision Involvement (PDI) | ||||
|---|---|---|---|---|
| Patient Characteristics | All Patients | No PDI n = 397 (48%) | Moderate to High PDI n = 429 (52%) | P value |
| Race | .53 | |||
| White | 650 (79%) | 308 (78%) | 342 (80%) | |
| Black | 176 (21%) | 89 (22%) | 87 (20%) | |
| Age, y | <.001 | |||
| <65 | 470 (57%) | 201 (51%) | 269 (63%) | |
| 65-75 | 277 (33%) | 149 (38%) | 128 (30%) | |
| >75 | 79 (10%) | 47 (12%) | 32 (7%) | |
| Education | <.001 | |||
| <12 y | 228 (28%) | 130 (33%) | 98 (23%) | |
| ≥12 y | 598 (72%) | 267 (67%) | 331 (77%) | |
| Married, % yes | 485 (59%) | 244 (61%) | 241 (56%) | .32 |
| Income | .75 | |||
| < $10000 | 199 (24%) | 102 (26%) | 97 (23%) | |
| $10 000-$50 000 | 548 (66%) | 261 (66%) | 287 (67%) | |
| $50 000-100 000 | 28 (34%) | 10 (2%) | 18 (4%) | |
| Missing or >$100 000 | 51 (6%) | 24(6%) | 27 (6%) | |
| Prior revascularization (yes) | 256 (31%) | 112 (28%) | 144 (34%) | .04 |
| Prior myocardiaI infarction (yes) | 268 (32%) | 126 (32%) | 142 (33%) | .35 |
| Hypertension (yes) | 633 (77%) | 310 (78%) | 323 (75%) | 0.62 |
| Angina (yes) | 541 (65%) | 244(61%) | 297 (69%) | 0.02 |
| Congestive heart failure (yes) | 140 (17%) | 58 (15%) | 82 (19%) | 0.19 |
| Diabetes (yes) | 255 (31%) | 120 (30%) | 135 (31%) | .76 |
| Lung disease (yes) | 198 (24%) | 106 (27%) | 92 (21%) | .23 |
| Renal dysfunction (yes) | 92 (11%) | 38 (10%) | 54 (13%) | .32 |
| Maximal medical therapy (yes) | 304 (37%) | 140 (35%) | 164 (38%) | .47 |
| Physician's perceived importance of CCATH | <.001 | |||
| Benefit > risk | 317 (38%) | 124 (31%) | 193 (54%) | |
| Equivocal | 136 (16%) | 72 (18%) | 64 (15%) | |
| Risk > benefit | 200 (24%) | 123 (31%) | 77 (18%) | |
| Missing | 173 (21%) | 78 (20%) | 95 (22%) | |
| Probability of CHD | .15 | |||
| 0-50% | 105 (13%) | 63 (16%) | 42 (10%) | |
| 50-75% | 165 (20%) | 84 (21%) | 81 (19%) | |
| 75-100% | 379 (46%) | 170 (43%) | 209 (49%) | |
| Missing | 177 (21%) | 80 (20%) | 97 (23%) | |
| Received CCATH (yes) | 384 (46%) | 153 (39%) | 231 (54%) | <.0001 |
| Patient PDI | ||||
| Moderate to high PDI | 700 (85) | 296 (42%) | 404 (58%) | <.0001 |
| No PDI | 125 (15) | 101 (81%) | 24 (19%) | |
Abbreviations: CCATH, cardiac catheterization; CHD, coronary heart disease.