title: Adolescence metabolic syndrome or adiposity and early adult metabolic syndrome.
abstract: OBJECTIVE
  To investigate the predictive role of adolescent metabolic syndrome (MetS) in development of early adult MetS, independent of adult body mass index (BMI).
  
  
  METHODS
  1424 adolescents (639 boys), participants of the Tehran Lipid and Glucose Study, followed for 10.4 years, were analyzed and logistic regression models were developed. Using the areas under the receiver operating characteristic curve, the discriminatory ability of adolescent MetS and overweight or obesity was evaluated. Net reclassification improvement was calculated to determine the accuracy of classification by adolescent MetS in place of overweight or obesity.
  
  
  RESULTS
  The mean ± SD of age and BMI were 14.6 ± 2.2 years and 20.3 ± 4.2 kg/m(2), respectively. The prevalence of MetS was 13.3% and 14.6% at baseline and after follow-up, respectively. The risk of developing early adult MetS among subjects who were overweight or obese in adolescence but nonobese as adults (OR: 1.65) was lower than the risk among subjects who were obese as adults but nonobese as adolescents (OR: 8.45). After adjustment for adult BMI, adolescent MetS and overweight or obesity did not show any association with the risk of adult MetS. Area under the receiver operating characteristic curve was higher for obesity (0.619) than MetS (0.589) and the net reclassification improvement value for MetS was 1.5% (P = .398).
  
  
  CONCLUSIONS
  Adolescent MetS or adiposity did not predict early adult MetS independent of adult BMI. The addition of adolescent MetS to obesity does not improve the predictive power for early adult MetS.
authors.affiliation: Obesity Research Center, Research Institute for Endocrine Science, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: fhospanah@endocrine.ac.ir.
authors.forename: Farhad
authors.initials: F
authors.lastname: Hosseinpanah
authors.forename: Golaleh
authors.initials: G
authors.lastname: Asghari
authors.forename: Maryam
authors.initials: M
authors.lastname: Barzin
authors.forename: Sahar
authors.initials: S
authors.lastname: Ghareh
authors.forename: Fereidoun
authors.initials: F
authors.lastname: Azizi
mesh_terms: D050154:Adiposity; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D015992:Body Mass Index; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D024821:Metabolic Syndrome / Q000453:epidemiology*; D011379:Prognosis; D055815:Young Adult
keywords: BMI; Body mass index; HDL-C; High-density lipoprotein cholesterol; MetS; Metabolic syndrome; NPV; NRI; Negative predictive value; Net reclassification improvement; PPV; Positive predictive value; ROC; Receiver operating characteristic; TG; TLGS; Tehran Lipid and Glucose Study; Triglyceride; WC; Waist circumference