Why We Should Not Be Indifferent to Specification Choices for Difference‐in‐Differences

Publisher: John Wiley & Sons Inc

E-ISSN: 1475-6773|50|4|1211-1235

ISSN: 0017-9124

Source: HEALTH SERVICES RESEARCH, Vol.50, Iss.4, 2015-08, pp. : 1211-1235

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Abstract