The terminology, definitions, and methods to determine adherence and persistence differ greatly in the published literature. The appropriateness and choice of the specific measure employed should be determined by the overall goals of the study, as well as the relative advantages and limitations of the measures.

Dr Andrade has performed consulting services and received grant support in the past from Merck, Pfizer, and Bristol-Myers Squibb, manufacturers of lipid-lowering drugs.

No abstract