In the article “Impact of the New ACC/AHA Guidelines on the Treatment of High Blood Cholesterol in a Managed Care Setting” published in November 2014 (Vol 7, No 8, pages 430-443), the study period was January 1, 2013, to December 31, 2013, rather than November 1, 2012, to October 31, 2013. In addition, the total study population was 14,114,500, rather than 25,705,722; the commercial population was 4,402,866, rather than 14,661,302; the Medicaid population was 2,173,914, rather than 3,313,910; and the Medicare population was 7,537,720, rather than 7,730,510. These population data affect the percentages cited in the body of the article and are also appearing in Table 3, Table 4, and Figure 2, which are corrected below. The overall results and conclusion of the study have not been affected. The article is corrected at www.AHDBonline.com.