Table 4.

Univariate Cox proportional hazards analysis for cardiovascular events according to Framingham cardiovascular risk category and myocardial perfusion defect.

Perfusion defect negative on MPS (patients number 233, events number 21)
	Low FCVRS patients number 53, events number 2			Intermediate FCVRS patients number 127, events number 11			High FCVRS patients number 53, events number 8
	HR	95% CI	P	HR	95% CI	P	HR	95% CI	P
CIMT ≥ 0.57	<0.001	<0.001 – 7.435	0.38	1.334	0.381 – 5.215	0.65	>9999	0.751 - >9999	0.084
RHI ≤ 2.11	0.909	0.036 – 22.97	0.95	6.987	1.338 – 128.2	0.017	6.075	1.080 – 113.6	0.039

Perfusion defect positive on MPS (patients number 78, events number 32)
	Low FCVRS patients number 7, events number 3			Intermediate FCVRS patients number 35, events number 9			High FCVRS patients number 36, events number 20
	HR	95% CI	P	HR	95% CI	P	HR	95% CI	P
CIMT ≥ 0.57	1.029	0.098 – 22.28	0.98	1.983	0.479 – 13.31	0.37	1.157	0.325 – 7.357	0.84
RHI ≤ 2.11	0.474	0.022 – 5.053	0.53	0.902	0.238 – 3.646	0.88	0.731	0.293 – 2.067	0.53

CI: confidence interval, CIMT: carotid intima media thickness, FCVRS: Framingham Cardiovascular Risk Score, HR: hazard ratio, MPS: myocardial perfusion scintigraphy, and RHI: reactive hyperemia-peripheral arterial tonometry index.