When Second Best Is Good Enough: A Comparison Between a True Experiment and a Regression Discontinuity Quasi-Experiment
randomized clinical trial
regression discontinuity design
Criminology and Criminal Justice
In this paper, we compare the results from a randomized clinical trial to the results from a regression discontinuity quasi-experiment when both designs are implemented in the same setting. We find that the results from the two approaches are effectively identical. We attribute the comparability in part to recent statistical developments that make the model required for the analysis of data from a regression discontinuity design easier to determine. These developments make an already strong quasi-experimental design even stronger.