Table 3.
Management and 30 day outcomes
| Characteristic | Usual care (n=447) | Decision aid (n=451) | P value |
|---|---|---|---|
| Shared management decision: | |||
| Observation unit admission for stress testing or CCTA | 225 (52.1) | 165 (37.3) | <0.001 |
| Follow up with a cardiologist | 52 (12.0) | 101 (22.9) | |
| Follow up with a primary care physician | 100 (23.1) | 138 (31.2) | |
| Have emergency physician decide | 55 (12.7) | 38 (8.6) | |
| Cardiac stress test performed within 30 days | 204 (45.6) | 172 (38.1) | 0.013 |
| Outpatient stress testing: | 35 (17.2) | 52 (30.2) | 0.001 |
| Exercise treadmill testing | 65 (31.9) | 44 (25.6) | 0.779 |
| Stress echocardiography | 86 (42.2) | 81 (47.1) | |
| Nuclear perfusion testing | 39 (19.1) | 37 (21.5) | |
| Other | 14 (6.9) | 10 (5.8) | |
| CCTA performed within 30 days | 80 (17.9) | 63 (14.0) | 0.111 |
| Coronary revascularization | 4 (0.9) | 7 (1.6) | 0.366 |
| Percutaneous coronary intervention | 3 (75.0) | 6 (85.7) | |
| Coronary artery bypass grafting | 1 (25.0) | 1 (14.3) | |
| Admitted to hospital from ED observation unit | 22 (4.9) | 22 (4.9) | 0.990 |
| Repeat ED visit | 39 (9.3) | 52 (12.5) | 0.156 |
| Readmission to hospital | 19 (4.5) | 20 (4.8) | 0.884 |
| Outpatient clinic visit | 259 (62.0) | 266 (64.1) | 0.568 |
| Cardiac events: | |||
| Acute myocardial infarction | 1 (0.2) | 4 (0.9) | 0.215 |
| Death of cardiac or unknown cause | 0 (0.0) | 0 (0.0) | 1.00 |
| MACE within 30 days* | 0 (0.0) | 1 (0.2) | 0.998 |
CCTA=coronary computed tomography angiography; ED=emergency department; MACE=.major adverse cardiac event.
*Excluding the index event.