Clinical efficacies of antihypertensive drugs

Scandinavian Cardiovascular Journal : SCJ
Ivar AursnesBent Natvig

Abstract

According to published data, the ability to prevent various hypertension-related events differs between the various antihypertensive drug groups. Although absolute drug effects differ among studies, relative drug effects could be considered constant. We therefore explored the possibility of drawing statistically valid conclusions about the differences in clinical efficacy between various drug groups by doing an overview of published data. We made a meta-analysis with a Bayesian fixed effect model in which we related the drug effects to the effects of placebo drugs. We selected 27 clinical trials from the literature according to specific criteria, including results from studies reporting the effects of the newer drugs when tested against diuretics and beta-blockers, and from studies in which diuretics and beta-blockers had been tested against placebo. We calculated the posterior probability distributions of the relative effects of angiotensin-converting enzyme (ACE) inhibitors vs calcium antagonists with three different endpoints: stroke, coronary disease and heart failure with point estimates of effects and with 95% credibility intervals. As an intermediate step in this procedure we obtained similar information about the effect...Continue Reading

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