Table 2.

Summary of analyses predicting years of completed education

Method	Difference (Tx – Control): Average Treatment Effect	95 % Confidence Interval: Lower Bound	95 % Confidence Interval: Upper Bound	N (Control vs. Tx)
OLS	−0.98*** (0.10)	−1.18	−0.78	NC = 6,980 NTx = 890
Propensity Score Matching	−0.93*** (0.09)	−1.11	−0.75	NC = 6,849 NTx = 890
Parametric Maximum Likelihood	−1.87*** (0.23)	−2.33	−1.41	NC = 6,980 NTx = 890
Semiparametric Maximum Likelihood	−0.70* (0.31)	−1.32	−0.08	NC = 6,980 NTx = 890

Note: Propensity score matching results indicate matches based on 1 % caliper radius method.

^*p < .05;

^***p < .001