A Weighting Analogue to Pair Matching in Propensity Score Analysis
Top Cited Papers
- 1 January 2013
- journal article
- research article
- Published by Walter de Gruyter GmbH in The International Journal of Biostatistics
- Vol. 9 (2), 215-234
- https://doi.org/10.1515/ijb-2012-0030
Abstract
Propensity score (PS) matching is widely used for studying treatment effects in observational studies. This article proposes the method of matching weights (MWs) as an analog to one-to-one pair matching without replacement on the PS with a caliper. Compared with pair matching, the proposed method offers more efficient estimation, more accurate variance calculation, better balance, and simpler asymptotic analysis. A statistical test for the misspecification of the PS model is proposed for balance checking purposes. An augmented version of the MW estimator is developed that has the double robust property, that is, the estimator is consistent, if either the outcome model or the PS model is correct. The proposed method is studied in simulations and illustrated through a real data example.Keywords
This publication has 32 references indexed in Scilit:
- Optimal caliper widths for propensity‐score matching when estimating differences in means and differences in proportions in observational studiesPharmaceutical Statistics, 2011
- Applying Propensity Score Methods in Medical Research: Pitfalls and ProspectsMedical Care Research and Review, 2010
- Matching Methods for Causal Inference: A Review and a Look ForwardStatistical Science, 2010
- Balance diagnostics for comparing the distribution of baseline covariates between treatment groups in propensity‐score matched samplesStatistics in Medicine, 2009
- Improving efficiency and robustness of the doubly robust estimator for a population mean with incomplete dataBiometrika, 2009
- Type I Error Rates, Coverage of Confidence Intervals, and Variance Estimation in Propensity-Score Matched AnalysesThe International Journal of Biostatistics, 2009
- A critical appraisal of propensity‐score matching in the medical literature between 1996 and 2003Statistics in Medicine, 2007
- Demystifying Double Robustness: A Comparison of Alternative Strategies for Estimating a Population Mean from Incomplete DataStatistical Science, 2007
- Model-Based Direct AdjustmentJournal of the American Statistical Association, 1987
- The central role of the propensity score in observational studies for causal effectsBiometrika, 1983