Number (%) of non-diagnostic CTCA, CAD-RADS 0, 1–2 and 3–5 patients, by sex
| Sex | Female | Male | All | P value |
| CAD-RADS 0 (%) | 1047 (46) | 685 (29) | 1732 (37) | <0.001 |
| CAD-RADS 1–2 (%) | 766 (33) | 916 (39) | 1682 (36) | <0.001 |
| CAD-RADS 3–5 (%) | 385 (17) | 647 (28) | 1032 (22) | <0.001 |
| Non-diagnostic | 103 (4) | 78 (3) | 181 (4) | <0.001 |
CAD-RADS allows three distinct groups of patients to be defined: those with normal coronary arteries (CAD-RADS 0); those with atheroma probably not associated with ischaemia (CAD-RADS 1–2); those with atheroma possibly or probably associated with ischaemia (CAD-RADS 3–5).
CAD-RADS, Coronary Artery Disease–Reporting and Data System; CTCA, computed tomographic coronary angiography.