Table 4.
Resource utilization and diagnostic cost of care by age in men
| Age (years) | All ages | <50 | 50–60 | >60 |
|---|---|---|---|---|
|
| ||||
| 628 | 322 | 237 | 69 | |
| Additional diagnostic testing, n (%) | ||||
| No additional testing | 442 (78.7) | 494 (78.7) | 174 (73.4) | 39 (56.5) |
| 1 additional test | 95 (15.1) | 26 (8.1) | 46 (19.4) | 23 (33.3) |
| ≥ 2 additional tests | 39 (6.2) | 15 (4.7) | 17 (7.2) | 7 (10.1) |
| Functional testing, n (%) | ||||
| SPECT | 49 (7.8) | 16 (5.0) | 22 (9.3) | 11 (15.9) |
| Stress echocardiography | 18 (2.9) | 6 (1.9) | 9 (3.8) | 3 (4.4) |
| ETT | 9 (1.4) | 4 (1.2) | 2 (0.8) | 3 (4.4) |
| Invasive coronary angiography, n (%) | 59 (9.4) | 16 (5.0) | 28 (11.8) | 15 (21.7) |
| Intervention, n (%) | ||||
| PCI | 28 (4.5) | 7 (2.2) | 14 (5.9) | 7 (10.1) |
| CABG | 4 (0.6) | 1 (0.3) | 2 (0.8) | 1 (1.5) |
| Cost (US$) | ||||
| Total cost of care (US$), mean ± SD | 3823± 5544 | 3055 ± 4125 | 4268 ± 6228 | 5882± 7792 |
| Overall diagnostic cost (US$), mean± SD | 3242± 2749 | 2772 ± 2189 | 3497 ± 2907 | 4559± 3382 |
| IntentiontodiagnoseACS (US$), ratio (95% CI) | 39,918 (31,110–48,726) | 89,242 (39,444–139,042) | 33,153 (22,980–43,327) | 19,661 (13,684–25,638) |
| Intention to rule out ACS (US$), ratio (95% CI) | 3528 (3229–3828) | 2860 (2573–3148) | 3910 (3360–4459) | 5935 (4083–7787) |
Costs are provided as mean ± standard deviation or ratio (95% confidence intervals) (all in US$). Test utilization is 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