Variables Items Intervention Group (n=59) Control Group (n=60)         n % n % χ2 p Gender                 Boys 42 71.2 37 61.4       Girls 17 28.8 23 38.3       Total 59 100.0 60 100.0 1.208 0.272 Age                 ≤ 10 19 32.2 12 20.0       11 26 44.1 21 35.0       12 11 18.6 17 28.3       ≥ 13 3 5.1 10 16.7       Total 59 100.0 60 100.0 12.575 0.051 Father’s education level                 Primary or below 23 39.0 17 28.3       Secondary 36 61.0 39 65.0       University or above 1 1.7 4 6.7       Total 59 100.0 60 100.0 2.820 0.244 Mother’s education level                 Primary or below 19 32.2 19 16.7       Secondary 39 66.1 36 58.3       University or above 1 1.7 5 8.3       Total 59 100.0 60 100.0 2.877 0.237 Family income (per month)                 ≤ 9999 29 49.2 17 50.0       10000 - 19999 23 39.0 15 41.7       ≥ 20000 7 11.9 10 8.3       Total 59 100.0 60 100.0 0.371 0.831

Table 1: Characteristics of boys and girls in the intervention and control groups (N=119).