Table 4

Multivariable Cox model for long-term repeat revascularisation

Variable	χ² test	HR	95% HR confidence limits		p Value
Age (per decade)	29.4	0.86	0.81	0.91	<0.001
Device size (mm)	14.1	0.82	0.74	0.91	<0.001
Peripheral vascular disease	10.6	1.33	1.12	1.57	0.001
Mayo long-term mortality risk score	8.4	0.96	0.94	0.99	0.004
Drug-eluting stent use	6.9	0.86	0.77	0.96	0.008
CVA/TIA	4.6	1.20	1.02	1.41	0.032
Current smoker	1.3	0.93	0.81	1.06	0.25
History of MI	1.1	0.94	0.84	1.06	0.29
Male	1.0	0.95	0.85	1.06	0.32
Calcium in stenosis	0.36	1.03	0.93	1.14	0.55
IR	18.4				<0.001
Diabetes	12.2				<0.001
Interaction (IR×Diabetes)	0.6				0.43
IR effect in patients with diabetes		1.18	0.98	1.43	0.078
IR effect in patients without diabetes		1.29	1.15	1.45	<0.001
Diabetes effect in IR		1.20	1.02	1.42	0.001
Diabetes effect in CR		1.31	1.13	1.53	0.029

CR, complete revascularisation; CVA, cerebral vascular accident; IR, incomplete revascularisation; MI, myocardial infarction; TIA, transient ischaemic attack.