“…This editorial examines some of the most common problems in claims of risk reduction and provides a checklist for hazard avoidance by MCO decision makers (Table 1). 6 Much Ado About Nothing: The Hazard of Clinically Insignificant Effect Sizes A December 2009 retrospective cohort analysis conducted by Simpson et al 7 used administrative claims data from 23 large employer groups to examine the 2-year outcomes of employed patients aged 18-64 years who were initiated for either primary or secondary prevention on simvastatin, which today is available as a generic drug for approximately $25 per month, 8,9 versus brand atorvastatin, which is priced at approximately $90-$125 per month 10,11 when both products are obtained in 90-day supplies for their recommended starting doses. 12,13 In a sample of 13,584 patient pairs matched on initial drug dose (low, medium, high), baseline cardiovascular events, average wage, and a propensity score for use of atorvastatin that was "generated from a logistic regression model .…”