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Table 2 Repartition of number of adolescents by gender and age strata in the HELENA study final sample § #

From: Main characteristics and participation rate of European adolescents included in the HELENA study

Age strata(Years) Females Males
n % n %
[12.5-14] 610 33.1 530 31.5
[14-15] 466 25.3 409 24.3
[15-16] 440 23.8 417 24.8
[16–17.5] 329 17.0 327 19.4
  1. § adolescents were included in ten cities: Athens in Greece, Dortmund in Germany, Ghent in Belgium, Heraklion in Greece, Lille in France, Pecs in Hungary, Roma in Italy, Stockholm in Sweden, Vienna in Austria and Zaragoza in Spain. # Data collected from 2006 to 2007.