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Table 1 Sample description

From: A pilot study with early adolescents: dealing with diet, tobacco and air pollution using practical experiences and biological markers

  No. Percent
Sex
 Female 188 67.9
 Male 89 32.1
Age (years)
  ≤ 15 250 90.3
  ≥ 16 27 9.7
School type
 Humanities 97 35.0
 Sciences 69 24.9
 Didactics and education 111 40.1