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St. Clair, Travis; Hallberg, Kelly; Cook, Thomas D. – Society for Research on Educational Effectiveness, 2014
Researchers are increasingly using comparative interrupted time series (CITS) designs to estimate the effects of programs and policies when randomized controlled trials are not feasible. In a simple interrupted time series design, researchers compare the pre-treatment values of a treatment group time series to post-treatment values in order to…
Descriptors: Measurement Techniques, Time, Randomized Controlled Trials, Comparative Analysis