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How Much Should We Trust Differences-In-Differences Estimates?

✍ Scribed by Bertrand, M.; Duflo, E.; Mullainathan, S.

Book ID
118154648
Publisher
MIT Press
Year
2004
Tongue
English
Weight
117 KB
Volume
119
Category
Article
ISSN
0033-5533

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## Abstract Ordinary least squares (OLS) and stochastic frontier (SF) analyses are commonly used to estimate industry‐level and firm‐specific efficiency. Using cross‐sectional data for English public hospitals, a total cost function based on a specification developed by the English Department of He