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Demographic information.
| T1 (2002) | T2 (2003) | T3 (2004) | ||
|---|---|---|---|---|
| Younger Cohort (N =908) |
Age range | 10 – 12 years | 11 – 13 years | 12 – 14 years |
| Age M(SD) years | 10.98(.40) | 11.94(.40) | 12.96(.40) | |
| Grade | 5 | 6 | 7 | |
| Gender - #female (%) | 476 (52.4%) | |||
| Older Cohort (N = 943) |
Age range | 12 – 15 years | 13 – 15 years | 14 – 16 years |
| Age M(SD) years | 12.92(.41) | 13.96(.40) | 14.98(.40) | |
| Grade | 7 | 8 | 9 | |
| Gender - #female (%) | 491 (52.1%) | |||
