Optimal caliper widths for propensity-score matching when estimating differences in means and differences in proportions in observational studies

• Published in: Pharmaceutical statistics : the journal of the pharmaceutical industry Vol. 10; no. 2; pp. 150 - 161
• Main Author: Austin, Peter C.
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.03.2011
• Subjects: Aged; Aged, 80 and over; bias; binary data; Confidence Intervals; Female; Humans; Main Paper; Male; matching; Monte Carlo Method; Monte Carlo simulations; observational study; Propensity Score; propensity-score matching; Risk; risk difference

In a study comparing the effects of two treatments, the propensity score is the probability of assignment to one treatment conditional on a subject's measured baseline covariates. Propensity‐score matching is increasingly being used to estimate the effects of exposures using observational data....