[태그:] Control groups

Meyer, B. D. (1995). Natural and quasi-experiments in economics. Journal of business &economic statistics, 13(2), 151-161.

Using research designs patterned after randomized experiments, many recent economic studies examine outcome measures for treatment groups and comparison groups that are not randomly assigned. By using variation in explanatory variables generated by changes in state laws, government draft mechanisms, or other means, these studies obtain variation that is readily examined and is plausibly exogenous. This article describes the advantages of these studies and suggests ...

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