title: The structure of metabolic syndrome components across follow-up survey from childhood to adolescence.
abstract: BACKGROUND
  The choice of what parameters are needed for the diagnosis of Metabolic syndrome (MetS) has been criticized due to the lack of an actual "gold standard" diagnostic test even in adults. This problem seems to be greater in children and adolescents.
  
  
  OBJECTIVE
  Stability assessment of factor structure underlying metabolic syndrome (MetS) components from childhood to adolescence in a panel study.
  
  
  METHODS
  A total number of 643 (305 boys and 338 girls) children (from 1999 to 2001), aged 6-10 years, with a complete median follow-up of 6.7 years (from 2006 to 2008) were selected among participants of Tehran Lipid and Glucose Study. We proposed 6 measured variables based on risk factors defined in Adult Treatment Panel III guidelines to describe clustering of MetS components.
  
  
  RESULTS
  The Goodness of fit of the two-factor model, extracted from exploratory factor analysis, was appropriate for boys and girls in both stages of the study using confirmatory factor analysis. Systolic blood pressure (SBP) and triglycerides (TGs), with parameter estimates (PE) of 1 and 0.75, respectively, were the greatest risk factors at baseline in boys and girls. Waist circumference with PE of 0.88 and 0.62, and SBP with PE of 0.99 and 0.86 in adolescent boys and girls, respectively, were important risk factors.
  
  
  CONCLUSIONS
  Our panel study supports the stability of the two-factor six-variable model across two developmental stages from childhood to adolescence, among which adiposity, SBP, and TG were the predominant risk factors.
authors.affiliation: Diabetes Research Centre, Mazandaran University of Medical Sciences, Sari, IR Iran.
authors.forename: Adeleh
authors.initials: A
authors.lastname: Bahar
authors.forename: Firoozeh
authors.initials: F
authors.lastname: Hosseini Esfahani
authors.forename: Mohammad
authors.initials: M
authors.lastname: Asghari Jafarabadi
authors.forename: Yadollah
authors.initials: Y
authors.lastname: Mehrabi
authors.forename: Fereidoun
authors.initials: F
authors.lastname: Azizi
keywords: Adolescent; Childhood; Factor Analysis; Statistical