Table 1.
Baseline characteristics of study participants
| Variable |
Planned invasive test
(n=116) |
||
|
Usual care strategy
(n=64) |
FFRCT-guided strategy
(n=52) |
p Value | |
| Demographics | |||
| Age, years | 63.6±11.6 | 55.3±10.2 | <0.001 |
| Female sex | 25 (39.1) | 24 (46.2) | 0.41 |
| Racial/ethnic minority (self-reported) | 1 (1.6) | 1 (1.9) | |
| Cardiac risk factors | |||
| Hypertension | 45 (70.3) | 28 (53.8) | 0.07 |
| Diabetes | 12 (18.8) | 3 (5.8) | 0.04 |
| Dyslipidaemia | 15 (23.4) | 10 (19.2) | 0.58 |
| Current or past tobacco use | 33 (51.6) | 26 (50.0) | 0.51 |
| Pretest probability of obstructive CAD* | 54.5±17.1 | 44.6±16.1 | 0.002 |
| Anginal type | 0.22 | ||
| Typical angina | 19 (29.7) | 17 (32.7) | |
| Atypical angina | 42 (65.6) | 35 (67.3) | |
| Non-cardiac chest pain | 3 (4.7) | 0 (0.0) | |
Data shown as mean±SD or number (percentage). *Pretest probability of obstructive CAD±SD calculated by the updated Diamond and Forrester score.18
CAD, coronary artery disease; FFRCT, fractional flow reserve estimated using CT.