Ezetimibe in Combination With a Statin Does Not Reduce All-Cause Mortality

Akshar Y. Patel, Jayasree Pillarisetti, Joshua Marr, James L. Vacek

Abstract


Background: Although the ezetimibe-statin combination has been shown to reduce LDL cholesterol by 12% compared to a statin alone, its effect on hard clinical endpoints such as mortality is less certain. Prior trials evaluated this combination in highly select population groups, but impact on all- cause mortality in the general population has not been reported.

Methods: A total of 3,827 subjects who were prescribed either a statin (group 1) or the combination of statin with ezetimibe (group 2) between January 1st, 2005 and January 1st, 2008 were studied. Socio-demographic and clinical variables and mortality records were analyzed. Univariate and stepwise multivariate logistic regression analysis was performed to identify the impact of ezetimibe on all-cause mortality, controlling for patient characteristics, selected cardiovascular diseases and risk factors, and medications.

Results: Group 1 (n = 2,909), and group 2 (n = 918) were similar in regards to most demographic variables, 152 patients died from any cause during the study period. There was no difference in all cause mortality between the groups. Hypertension, higher HDL-C and omega-3 fatty acid use were associated with ezetimibe use in this cohort of patients and were considered as covariates in the analysis. Patients on the drug combination did not experience lower mortality after controlling for covariates and other significant risk factors.

Conclusions: No significant mortality benefit was found with the use of ezetimibe in combination with a statin over use of a statin alone. Omega-3 fatty acid use and higher HDL-C demonstrated a substantial survival benefit.




doi: http://dx.doi.org/10.4021/jocmr1371w


Keywords


Ezetimibe; LDL; HDL; Mortality

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