Prognostic implications of negative dobutamine stress echocardiography in African Americans compared to Caucasians

Table 4 Risk-adjusted Cox proportional hazards regression analysis for predicting cardiac death/M.I in African-American and Caucasian patients with PMHR ≥ 85% and NDSE

	Hazard Ratio	95% CL	P-value
Race (African-American)	3.234	1.579 – 6.622	0.001 *
Age in Years	1.049	1.012 – 1.086	0.009 *
Male	1.294	0.641 – 2.610	0.472
Diabetes	0.916	0.426 – 1.968	0.822
CAD/Prior MI/Prior Revascularization	2.607	1.205 – 5.639	0.015 *
History of CHF	1.101	0.461 – 2.633	0.828
Hypertension	1.059	0.301 – 3.729	0.929
Hypercholesterolemia	0.811	0.393 – 1.674	0.571
Tobacco Use	1.616	0.760 – 3.435	0.213
Chest Pain	2.457	0.991 – 6.088	0.052
B-Blocker/CC-Blocker	1.153	0.572 – 2.326	0.691
LVH	0.590	0.290 – 1.200	0.145
EF in Percent	0.977	0.945 – 1.011	0.182

*Statistically significant; CAD = coronary arterial disease; CHF = chronic heart failure; CL = confidence limits; EF = ejection fraction; LVH = left ventricular hypertrophy; MI = myocardial infarction; PMHR = predicted maximal heart rate; NDSE = Negative Dobutamine Stress Echocardiography

ISSN: 1476-7120