Table 1.

Sample Size and Age Distribution at Baseline and Last Visit

Intervention
n = 334
Usual Care
n = 329
Total
n = 663
Baseline%%%
Age distribution, y
 829.328.929.1
 946.447.747.1
 1024.323.423.8
Mean age, y (SD) 9.5 (.74) 9.5 (.70) 9.5 (.72)
Last visit*n = 295n = 285n = 580
Age distribution, y%%%
 1401.1.5
 1513.917.915.9
 1634.631.633.1
 1736.634.735.7
 1814.913.314.1
 1901.4.7
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.