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From:
Published online 2011 February 18. doi: 10.1080/00273171.2011.540480

TABLE 4

Comparison of Effect Sizes Across Different Propensity Score Methods

Propensity Score MethodAbsolute Risk Difference (95% Confidence Interval)Relative Risk (95% Confidence Interval)
Propensity score matching0.0185 (−0.018, 0.055)0.88 (0.69, 1.13)
Stratification on the propensity score—5 strata0.035 (0.006, 0.063)0.75 (0.59, 0.96)
Stratification on the propensity score—10 strata0.027 (−0.002, 0.056)0.80 (0.63, 1.03)
Weighting—first estimator0.020 (−0.008, 0.047)0.86 (0.66, 1.01)
Weighting—doubly robust estimator0.025 (−0.002, 0.052)0.82 (0.66, 1.03)
Covariate adjustment using the propensity score0.023 (−0.005, 0.052)0.84 (0.68, 1.04)