Table 2. Descriptive Characteristics of Study Groups
VariableIntervention Group (n = 100)Comparison Group (n = 943)P Value
Mean age ± SD at recruitment, years9.03 ± 1.69.0 ± 2.7.912
Girls (%)63.043.7<.001
Socioeconomic rank (%)
    1–53.49.3<.001
    6–1012.428.3
    11–1542.738.7
    16–2041.633.7
  • SD, standard deviation.