Table 3. Covariate Balance within and Across Periods for the Top Predictors of Coronary Artery Disease.

Patient Characteristics	Period	Standardized Difference: Unmatched Cohort	Standardized Difference: Conventional PS	Standardized Difference: CTS PS
Mean Age	2001-2005	0.135	0.054	0.021
	Period 1	0.171	0.084	0.008
	Period 2	0.352	0.112	0.078
	Period 3	0.039	0.118	0.029
White Race	2001-2005	0.110	0.000	0.000
	Period 1	0.119	0.021	0.010
	Period 2	0.119	0.012	0.012
	Period 3	0.001	0.079	0.014
Prior Diabetes	2001-2005	0.101	0.009	0.005
	Period 1	0.085	0.004	0.005
	Period 2	0.094	0.040	0.002
	Period 3	0.086	0.021	0.008
Prior Hyperlipidemia	2001-2005	0.008	0.007	0.014
	Period 1	0.065	0.026	0.011
	Period 2	0.015	0.058	0.014
	Period 3	0.024	0.028	0.023
Prior Hypertension	2001-2005	0.082	0.012	0.001
	Period 1	0.011	0.034	0.001
	Period 2	0.078	0.040	0.004
	Period 3	0.072	0.021	0.013
Prior Heart Failure	2001-2005	0.039	0.003	0.008
	Period 1	0.059	0.003	0.019
	Period 2	0.021	0.009	0.005
	Period 3	0.009	0.017	0.019
Prior Peripheral Vascular Disease	2001-2005	0.040	0.014	0.015
	Period 1	0.065	0.024	0.015
	Period 2	0.022	0.006	0.009
	Period 3	0.005	0.013	0.023
Prior Pulmonary Disease	2001-2005	0.086	0.003	0.000
	Period 1	0.057	0.020	0.005
	Period 2	0.116	0.003	0.020
	Period 3	0.126	0.076	0.015