The first phase of the study is a hospital-based cross-sectional, epidemiological survey. The required sample size is 1,260 patients from 50 hospitals across Thailand. Each of the hospital will enroll 10 to 40 consecutive patients, depending on case availability on the date conducting the survey, with dyslipidemia and classified as high risk as defined by the protocol. Lipid levels will be based on serological analysis conducted by a local laboratory.