The systematic review for the 2018 Cholesterol Clinical Practice GuidelinesS1.1-1 is published in conjunction with the present guideline, and includes its respective data supplements. Numerical values for triglycerides, total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high- density lipoprotein cholesterol (HDL-C), and non HDL- C are given in both mg/dL and mmol/L. To convert to mmol/L, the values in mg/dL for TC, LDL-C, HDL-C, and non HDL-C were divided by 38.6 and for triglycerides, by 88.6. On May 10, 2018 a writing committee member discussed their participation in an industry-supported, multicenter study, which they had thought was not rel- evant to this prevention guideline. However, when this was reviewed using specific ACC/AHA criteria it was considered to represent a relevant relationship with in- dustry. Given the current policy that a prevention guide- line writing committee member must be free of any relevant relationships with industry, this member was removed from the committee. The 2 sections authored by the writing committee member were removed and replaced by new material written by the guideline chairs, and the revised sections reviewed and approved by all remaining writing committee members. The writ- ing committee member did not participate in any fur- ther guideline discussions or review of the manuscript or recommendations. 1.2. Organization of the Writing Committee The writing committee consisted of medical experts including cardiologists, internists, interventionalists, a nurse practitioner, pharmacists, a physician assistant, a pediatrician, a nephrologist, and a lay/patient repre- sentative. 