Table 2.

Average Annual Per Capita Medical Expenditures by Sector and Year for Propensity Score Matched Models

	Unmatched			Matched
	Case subjects ($)	Control subjects ($)	Difference ($)	Case subjects ($)	Control subjects ($)	Difference ($)	t Test P value
Outpatient services
2014	6731	3994	2737	6731	4446	2285	<0.001
2013	5082	3811	1271	5082	4261	882	<0.001
2012	4726	3639	1087	4726	4026	700	<0.001
2011	4365	3397	968	4365	3874	491	<0.001
2010	4005	3245	760	4005	3775	230	0.046
Inpatient admissions and services
2014	3628	1250	2378	3628	1554	2073	<0.001
2013	1915	1134	781	1915	1480	435	0.002
2012	1670	1008	662	1670	1364	306	0.047
2011	1442	947	495	1442	1353	88	0.417
2010	1166	881	285	1165	1217	−52	0.578
Pharmaceutical drugs
2014	2804	1932	872	2804	2334	470	<0.001
2013	1800	1294	506	1800	1464	336	<0.001
2012	1708	1247	461	1708	1435	272	<0.001
2011	1626	1203	423	1626	1377	250	<0.001
2010	1571	1141	429	1571	1335	236	<0.001
Total
2014	13,162	7175	5987	13,162	8334	4828	<0.001
2013	8799	6239	2559	8799	7204	1594	<0.001
2012	8103	5893	2210	8103	6826	1277	<0.001
2011	7432	5548	1884	7432	6604	828	<0.001
2010	6741	5267	1474	6741	6327	414	0.016

P values for 2-sample t tests for difference in the means between case and control subjects for the matched sample.

N = 13,896 case subjects, N = 387,371 control subjects.

All values are adjusted to constant 2010 dollars.

All observations with negative expenditures and missing data for matching models are excluded.