Table 1.
Characteristics of the sample, by age, sex and nationality, n = 1099
| N (%) | |
|---|---|
| Age | |
| 8–11 yrs | 315 (28.7) |
| 12–15 yrs | 486 (44.2) |
| 16–18 yrs | 298 (27.1) |
| Sex | |
| Girls | 595 (54.1) |
| Boys | 504 (45.9) |
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