Comment: Improved Local Efficiency and Double Robustness
Tan Zhiqiang
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Tan Zhiqiang: Rutgers University
The International Journal of Biostatistics, 2008, vol. 4, issue 1, 11
Abstract:
For missing data and causal inference problems, Rubin and van der Laan (2008) proposed estimators to achieve so-called improved local efficiency. We show that their estimators agree with existing estimators in the case of linear models, point out that one particular version of their estimators is also doubly robust, and suggest an extension for where the propensity score is estimated.
Keywords: causal inference; double robustness; local efficiency (search for similar items in EconPapers)
Date: 2008
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DOI: 10.2202/1557-4679.1109
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