Skip to main content
. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: Psychol Methods. 2010 Sep;15(3):234–249. doi: 10.1037/a0019623

Table 2. Information on measured covariate balance and treatment effect estimates for the Average Treatment on the Treated Propensity Score Techniques.

Propensity Score
Technique
(estimation , application)
Number of
covariates with
standardized
bias < 0.25
Maximum
standardized
bias
Name of covariate with
maximum standardized
bias
Treatment Effect
Estimate
95% Confidence Interval
Low High
Mode l 1 , 1:1 2 0.50 alcohol problems 1.17 0.69 1.99
Model 2 , 1:1 2 0.55 alcohol problems 1.54 0.87 2.74
Model 3 , 1:1 2 0.53 alcohol problems 1.34 0.78 2.31
Model 1 , Full 3 0.32 free lunch 1.43 0.90 2.26
Model 2 , Full 10 0.50 parental monitoring 1.70 1.07 2.70
Model 3 , Full 2 0.39 free lunch 1.79 1.14 2.82
Model 1 , Odds 3 0.30 free lunch 1.14 0.66 1.95
Model 2 , Odds 7 0.32 free lunch 1.12 0.63 1.99
Model 3 , Odds 0 0.21 intervention in school 1.33 0.76 2.33

Estimation Methods = Model 1: Multivariable Logistic Regression, Model 2: Multivariable Logistic Regression with product-terms, Model 3: Generalized Boosted Modeling Average Treatment on the Treated (ATT) application methods: 1:1 = nearest neighbor one to one matching, Full = full matching, Odds = weighting by the odds