JAMA  "Validation of the Atherosclerotic Cardiovascular Disease Pooled Cohort Risk Equations"
http://jama.jamanetwork.com/article.aspx?articleid=1853203
"Conclusions and Relevance  In this cohort of US adults for whom statin initiation is considered based on the ACC/AHA Pooled Cohort risk equations, observed and predicted 5-year atherosclerotic CVD risks were similar, indicating that these risk equations were well calibrated in the population for which they were designed to be used, and demonstrated moderate to good discrimination."