Table 1.
Characteristics of adolescents at baseline
| Variable | |
|---|---|
| Male, n (%) | 476 (52.5) |
| Age, years: mean (s.d.) | 12.6 (0.46) |
| Low level of education, n (%) | 360 (39.7) |
| Single-parent family, n (%) | 159 (18) |
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