Sample Size and Age Distribution at Baseline and Last Visit
| Intervention n = 334 | Usual Care n = 329 | Total n = 663 | |
|---|---|---|---|
| Baseline | % | % | % |
| Age distribution, y | |||
| 8 | 29.3 | 28.9 | 29.1 |
| 9 | 46.4 | 47.7 | 47.1 |
| 10 | 24.3 | 23.4 | 23.8 |
| Mean age, y (SD) | 9.5 (.74) | 9.5 (.70) | 9.5 (.72) |
| Last visit* | n = 295 | n = 285 | n = 580 |
| Age distribution, y | % | % | % |
| 14 | 0 | 1.1 | .5 |
| 15 | 13.9 | 17.9 | 15.9 |
| 16 | 34.6 | 31.6 | 33.1 |
| 17 | 36.6 | 34.7 | 35.7 |
| 18 | 14.9 | 13.3 | 14.1 |
| 19 | 0 | 1.4 | .7 |
| Mean age, y (SD) | 17.0 (.88) | 17.0 (.93) | 17.0 (.91) |
↵* Percent of participants seen at final visit was 87.5% overall: 88.3% for intervention and 86.6% for usual care group.