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Abstract Title:

Risk factors for statin-associated rhabdomyolysis.

Abstract Source:

Pharmacoepidemiol Drug Saf. 2007 Mar ;16(3):352-8. PMID: 16892458

Abstract Author(s):

Stephanie Schech, David Graham, Judy Staffa, Susan E Andrade, Lois La Grenade, Margaret Burgess, David Blough, Andy Stergachis, K Arnold Chan, Richard Platt, Deborah Shatin

Article Affiliation:

Center for Health Care Policy and Evaluation, Eden Prairie, MN 55344, USA. stephanie_d_schech@uhc.com

Abstract:

PURPOSE: To identify and characterize risk factors for rhabdomyolysis in patients prescribed statin monotherapy or statin plus fibrate therapy.

METHODS: A nested case-control study was conducted within a cohort of 252,460 new users of lipid-lowering medications across 11 geographically dispersed U.S. health plans. Twenty-one cases of rhabdomyolysis confirmed by medical record review were compared to 200 individually matched controls without rhabdomyolysis. A conditional logistic regression model was applied to evaluate the effects of age, gender, comorbidities, concurrent medication use, dosage, and duration of statin use on the development of rhabdomyolysis.

RESULTS: Statin users 65 years of age and older have four times the risk of hospitalization for rhabdomyolysis than those under age 65 (odds ratio (OR) = 4.36, 95% confidence interval (CI): 1.5,14.1). We also observed a joint effect of high statin dosage and renal disease (p = 0.022). When these two variables were added to the model with age, we obtained an OR of 5.73 for dosage (95%CI: 0.63, 52.6) and 6.26 for renal disease (95%CI: 0.46, 63.38). Although not statistically significant, we did observe a greater than twofold increase in risk for rhabdomyolysis among females (OR = 2.53, 95%CI: 0.91, 7.32).

CONCLUSIONS: Findings of this study indicate that older age is a risk factor for rhabdomyolysis among statin users. Although the evidence is not as strong, high statin dosage, renal disease, and female gender may be additional risk factors. Patients at higher risk of developing rhabdomyolysis should be closely monitored for signs and symptoms of the disease.

Study Type : Human Study
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Sayer Ji
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