Tracking of overweight and obesity in Greek youth.

Objectives: The aim of this study was to determine the prevalence and tracking of overweight and obesity in a representative sample of Greek youth and the relation with child and parental factors.

Methods: Data were derived from 2 follow-ups of the Greek 1983 National Perinatal Survey by means of a questionnaire completed by parents in 1990 and parents/adolescents in 2001. Parent- and self-reported height and weight measurements were available for 7,219 participants aged 7, and 2,842 participants aged 18.

Results: The overall overweight/obesity prevalence was 24.3% at age 7, and 15.1% at age 18. The overweight prevalence increased from childhood to adolescence in boys (16.1 to 19.1%) and decreased in girls (19.2 to 8.0%), while the obesity prevalence showed a decrease in both boys (6.2 to 3.6%) and girls (5.8 to 1.0%). Overall, tracking of weight status was 73.7%. More boys (49.2%) remained overweight/obese than girls (24.7%). At age 7, overweight/ obesity was positively associated with male gender, paternal education, and urban residence. Overweight/obesity also correlated with male gender at age 18, and with parental weight status.

Conclusions: The prevalence of overweight among Greek youth is high and showed an increase from childhood to adolescence in boys, and a decrease in girls.