Defining the metabolic syndrome in children and adolescents: Will the real definition please stand up?

Objectives To review the use of definitions of the metabolic syndrome in studies of children and adolescents and to review results front studies that used factor analysis to examine structure among cardiometabolic variables. Study design Literature review. Results In 27 publications. authors used 40 unique definitions of the metabolic syndrome. Most of these definitions were adaptations of the adult definition developed by the National Cholesterol Education Program. In 11 studies that used exploratory factor analysis, the number of components ranged from 5 to 19, and the number of factors identified ranged from 1 to 5. Conclusions The use of multiple definitions of the metabolic syndrome argues strongly for the development of a standard pediatric definition.