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Can group medical clinics improve lipid management in diabetes?

Crowley MJ, Melnyk SD, Ostroff JL, Fredrickson SK, Jeffreys AS, Coffman CJ, Edelman D. Can group medical clinics improve lipid management in diabetes? The American journal of medicine. 2014 Feb 1; 127(2):145-51.

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BACKGROUND: Group medical clinics may improve diabetes and hypertension control, but data about dyslipidemia are limited. We examined the impact of group medical clinics on lipids among patients with uncontrolled diabetes and hypertension. METHODS: Prespecified secondary analysis of 239 veterans randomized to group medical clinics or usual care. Lipids were assessed at study baseline, midpoint, and end. We used linear mixed models to compare lipid levels between arms and generalized estimating equation models to compare low-density lipoprotein cholesterol (LDL-C) goal attainment. An additional post hoc analysis examined intensification of cholesterol-lowering medications in both arms. RESULTS: At baseline, mean total cholesterol was 169.7 mg/dL (SD 47.8), LDL-C 98.2 mg/dL (SD 41.7), and high-density lipoprotein cholesterol (HDL-C) 39.3 mg/dL (SD 13.0). Median baseline triglycerides were 131 mg/dL (interquartile range 122). By study end, mean total cholesterol and LDL-C in group medical clinics were 14.2 mg/dL (P = .01) and 9.2 mg/dL (P = .02) lower than usual care, respectively; 76% of group medical clinic patients met goals for LDL-C, versus 61% of usual care patients (P = .02). Triglycerides and HDL-C remained similar between study arms. Treatment intensification occurred in 52% of group medical clinic patients, versus 37% of usual care patients between study baseline and end (P = .04). The mean statin dose was higher in group medical clinic patients at study midpoint and end. CONCLUSIONS: Group medical clinics appear to enhance lipid management among patients with diabetes and hypertension. This may be a result of greater intensification of cholesterol-lowering medications in group medical clinics relative to usual care.

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