Table 2.

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.