alexa Meta-analyses of prospective studies on coronary heart disease, type A personality, and hostility.
Medicine

Medicine

Anatomy & Physiology: Current Research

Author(s): Myrtek M

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Abstract BACKGROUND: Several large-scale prospective studies have failed to find an association between Type A personality (TAP) or hostility and coronary heart disease (CHD). The existing meta-analyses on this topic have several shortcomings, such as a selective search of the literature, the failed use of effect sizes, and methodological flaws. METHODS: The present meta-analyses cover all prospective studies until the end of 1998. The correlation coefficient r is used as effect size to yield information on the population effect size R and variance. Several analyses have been carried out to stratify for disease endpoints, samples (healthy population, CHD patients), and methods used to determine TAP or hostility. RESULTS: The population effect size (weighted average of all correlation coefficients) for TAP and CHD is R=0.003 (n=74,326, P=0.213), and for hostility and CHD R=0.022 (n=15,038, P=0.003). CONCLUSIONS: The population effect size for TAP and CHD is not significant. Hostility yields a significant association with CHD; however, the effect size is so low that it has as yet no practical meaning for prediction and prevention.
This article was published in Int J Cardiol and referenced in Anatomy & Physiology: Current Research

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