Table 2.

Mean Pearson Correlations between balance measures and absolute bias for propensity score subclassification, N=1000

	Absolute Bias Outcome A		Absolute Bias Outcome B		Absolute Bias Outcome C		Absolute Bias Outcome D
	Cntns	Mixed	Cntns	Mixed	Cntns	Mixed	Cntns	Mixed
Mean SMD	0.90	0.68	0.89	0.68	0.89	0.66	0.88	0.65
Median SMD	0.55	0.42	0.53	0.42	0.53	0.41	0.51	0.40
Max SMD	0.75	0.60	0.75	0.60	0.77	0.58	0.77	0.58
%(SMD) <0.25	0.52	0.35	0.51	0.34	0.50	0.33	0.49	0.32
%(SMD) <0.1	0.82	0.65	0.81	0.64	0.83	0.63	0.82	0.62
Mean K-S Statistic	0.73	0.50	0.72	0.49	0.70	0.47	0.69	0.47
Mean t-test statistic	0.86	0.71	0.85	0.70	0.87	0.69	0.86	0.69
Propensity Score SMD	−0.59	−0.65	−0.58	−0.65	−0.58	−0.63	−0.58	−0.63
Prognostic Score 1 SMD	1.00	1.00	0.99	0.99	0.96	0.98	0.95	0.97
Prognostic Score 2 SMD	1.00	1.00	0.99	0.99	0.96	0.98	0.95	0.98
Prognostic Score 3 SMD	0.98	0.99	0.97	0.98	0.95	0.97	0.93	0.96
Prognostic Score 4 SMD	0.99	1.00	0.98	0.99	0.94	0.98	0.93	0.97
Prognostic Score 5 SMD	1.00	1.00	0.98	0.99	0.96	0.98	0.95	0.97
Prognostic Score 6 SMD	0.84	0.79	0.82	0.74	0.64	0.54	0.60	0.42
Prognostic Score 7 SMD	1.00	1.00	0.99	0.99	0.96	0.98	0.95	0.97

Mean SMD: Mean Standardized Mean Difference (SMD); Median SMD: Median SMD; Maximum SMD: Maximum SMD; %(SMD)<0.25: Percentage of SMDs less than 0.25; %(SMD)<0.1: Percentage of SMDs less than 0.1; Maximum K-S statistic: Maximum Kolmogorov-Smirnov statistic; Mean K-S statistic: Mean Kolmogorov-Smirnov statistic; Propensity Score SMD: SMD in Propensity Scores; Prognostic Score 1–7 SMD: SMD in Prognostic Scores for Prognostic Score Models 1–7; Cntns: all covariates are continuous; Mixed: a mixture of continuous and binary covariates.