A cluster randomised trial dataset containing 22 schools. The data contains a random sample of test data of pupils and not actual trial data.
A data frame with 265 rows and 5 variables
Posttest: posttest scores
Prettest: prettest scores
Intervention: the indicator for intervention groups in a two arm trial, coded as 1 for intervention group and 0 for control group.
Intervention2: a simulated indicator for intervention groups in a three arm trial.
School: numeric school identifier
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