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Original Article
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Volume 343:1298-1304 November 2, 2000 Number 18
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Lack of Correlation between Psychological Factors and Subclinical Coronary Artery Disease
Patrick G. O'Malley, M.D., M.P.H., David L. Jones, M.D., M.P.H., Irwin M. Feuerstein, M.D., and Allen J. Taylor, M.D.

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ABSTRACT

Background The relation between psychological variables and clinically evident coronary artery disease has been studied extensively, although the potential mechanisms of such a relation remain speculative. We studied the relation between multiple psychological variables and subclinical coronary artery disease to assess the possible role of such variables in atherogenesis.

Methods We conducted a prospective study of 630 consecutive consenting, active-duty U.S. Army personnel, 39 to 45 years of age, without known coronary artery disease. Each participant was assessed for depression, anxiety, somatization, hostility, and stress. Subclinical coronary artery disease was identified by electron-beam computed tomography.

Results The mean (±SD) age of the subjects was 42±2 years; 82 percent were male, and 72 percent were white. The prevalence of coronary-artery calcification was 17.6 percent (mean calcification score, 10±49). The prevalence of prior or current psychiatric disorders was 12.7 percent. There was no correlation between the coronary-calcification score and the scores measuring depression (r=–0.07, P=0.08), anxiety (r=–0.07, P=0.10), hostility (r=–0.07, P=0.10), or stress (r=–0.002, P=0.96). Somatization (the number and severity of durable physical symptoms) was inversely correlated with calcification scores (r=–0.12, P=0.003), even after we controlled for age and sex. In multivariate logistic-regression models, a somatization score greater than 4 (out of a possible 26) was independently associated with the absence of any coronary-artery calcification (odds ratio, 0.49; 95 percent confidence interval, 0.25 to 0.96).

Conclusions Our data suggest that depression, anxiety, hostility, and stress are not related to coronary-artery calcification and that somatization is associated with the absence of calcification.


Source Information

From the Departments of Medicine (P.G.O., D.L.J., A.J.T.) and Radiology (I.M.F.), Walter Reed Army Medical Center, Washington, D.C.; and the Uniformed Services University of the Health Sciences, Bethesda, Md. (P.G.O., D.L.J., I.M.F., A.J.T.).

Address reprint requests to Dr. O'Malley at the General Internal Medicine Service, Department of Medicine (EDP), Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd., Bethesda, MD 20814-4799, or at patrick.omalley{at}na.amedd.army.mil.

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