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Table 1 Characteristics and distribution of study variables of eighth and tenth grade students participating in the Amsterdam Youth Health Monitor between school years 2010–2011 and 2014–2015

From: Associations between overweight and mental health problems among adolescents, and the mediating role of victimization

  Grade 8 Grade 10 Total
Participants (n) 10,009 7674 17,683
Mean age (years) 14.01 15.96 14.86
Sex (%)
 Boys 47.4 45.6 46.6
 Girls 52.6 54.4 53.4
Ethnicity (%)
 Dutch 39.7 40.4 40.0
 Surinamese 10.8 10.9 10.8
 Turkish 9.0 9.2 9.0
 Moroccan 15.8 15.3 15.6
 Other 24.7 24.3 24.5
Overweight, excl. Obese (%) 18.0 16.1 17.1
Obese, excl. Overweight (%) 5.5 4.7 5.2
Bullying victimization (%) 7.1 1.9 4.8
Psychosocial problems (%) 10.6 8.2 9.5
Suicidal thoughts (%) 16.5 9.6 13.5