Table 3.
Resource utilization and diagnostic cost of care by age in women
| Age (years) | All ages | <50 | 50–60 | >60 |
|---|---|---|---|---|
|
| ||||
| 612 | 244 | 257 | 111 | |
| Test utilization, n (%) | ||||
| No additional testing | 526 (86.0) | 218 (89.3) | 223 (86.8) | 85 (76.6) |
| 1 additional test | 68 (11.1) | 18 (7.4) | 31 (12.1) | 19 (17.1) |
| ≥2 additional tests | 18 (2.9) | 8 (3.3) | 3 (1.2) | 7 (6.3) |
| Functional testing, n (%) | ||||
| SPECT | 38 (6.2) | 13 (5.3) | 11 (4.3) | 14 (12.6) |
| Stress echocardiography | 19 (3.1) | 6 (2.5) | 9 (3.5) | 4 (3.6) |
| ETT | 4 (0.7) | 2 (0.8) | 1 (0.4) | 1 (0.9) |
| Invasive coronary angiography, n (%) | 22 (3.6) | 5 (2.1) | 8 (3.1) | 9 (8.1) |
| Intervention, n (%) | ||||
| PCI | 9 (1.5) | 3 (1.2) | 2 (0.8) | 4 (3.6) |
| CABG | 1 (0.2) | 0 (0.0) | 0 (0.0) | 1 (0.9) |
| Costs (US$) | ||||
| Total cost of care (US$), mean ± SD | 2832± 3116 | 2607 ± 2156 | 2624 ± 1919 | 3813± 5823 |
| Total diagnostic cost (US$), mean ± SD | 2661± 1817 | 2522 ± 1586 | 2570 ± 1591 | 3179± 2562 |
| Intention to diagnose | 95,799 | 102,548 | 132,095 | 58,803 |
| ACS (US$), ratio (95% CI) | (53,811–137,788) | (25,374–179,723) | (21,681–242,510) | (19,351–98,255) |
| Intention to rule out | 2737 | 2585 | 2621 | 3360 |
| ACS (US$), ratio (95% CI) |
(2563–2911) | (2348–2822) | (2396–2846) | (2730–3991) |
Costs are provided as mean± standard deviation or ratio (95%confidence intervals) (all in US$). Test utilizationis provided in addition to CCTA and may include multiple invasive coronary angiographies, exercise tolerance test (ETT), single-photon emission computed tomography (SPECT), nuclear myocardial perfusion imaging (MPI), echocardiography and stress echocardiography during index hospitalization
PCI percutaneous coronary intervention, CABG coronary artery bypass graft, ACS acute coronary syndrome