Table 1.
O Observation; X intervention
COL1 data collection noted with small bracketed letters, COL2 with numbers.
Smaller black box indicates treatment v. “treatment as usual” effect comparisons, shaded areas indicate observations for assessment of pre-intervention patterns on intervention effect. See Table 2.
W4 recruiting 6th graders for differential impact analysis, COL2 schools only
W7 and W8 collected only for COL2 to obtain their 18-month period of observation; W6 is 18-month endpoint for COL1