A new approach to test validity and clinical usefulness of the 2013 ACC/AHA guideline on statin therapy: A population-based study

International Journal of Cardiology
Davood KhaliliFereidoun Azizi

Abstract

The ACC/AHA released a new guideline on the assessment of cardiovascular risk and management of hypercholesterolemia that some controversy exists concerning its usefulness. We examined the clinical usefulness of this guideline in a high incidence population using novel measures. First, we validated the new risk equation in a cohort of 2372 men and 2781 women aged 40-75 years. Then, high risk individuals for cardiovascular diseases (CVDs) were identified according to the ACC/AHA guideline at baseline (as a predictor) and CVD outcomes were detected during a 10-year follow-up. Discrimination of the guideline was quantified and the quality of decisions was evaluated by Net Benefit Fraction index considering the harm, for false-positive, and benefit, for true-positive predictions. Finally, net number needed to treat (NNT) for statin was estimated, using test tradeoff index, in diabetic and non-diabetic subjects. During follow-up, 726 CVD events including 298 hard CVDs occurred. The equation overestimated the risk by 57% in men and 48% in women. Based on the guideline, 73% of men and 44% of women were eligible for statin therapy. The lowest sensitivity was detected for intensive treatment in non-diabetic subgroups (82% in men and 41%...Continue Reading

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Citations

May 14, 2016·Climacteric : the Journal of the International Menopause Society·F Ramezani TehraniF Azizi
Dec 17, 2016·Journal of Diabetes and Metabolic Disorders·Shirin Hasani-Ranjbar, Hanieh-Sadat Ejtahed

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