Assessing equity of healthcare utilization in rural China: results from nationally representative surveys from 1993 to 2008

Table 4 Concentration index of standardized healthcare utilization

	Utilization of outpatient service	Utilization of inpatient service	P
1993	0.0486*	0.0529*	>0.001
	(0.0045)	(0.0092)
1998	0.0310*	0.1543*	<0.001
	(0.0041)	(0.0095)
2003	0.0167*	0.2325*	<0.001
	(0.0050)	(0.0099)
2008	−0.0108*	0.1313*	<0.001
	(0.0053)	(0.0070)
P	<0.001	<0.001

Note: Standard errors of concentration index are in the parentheses. * Significant at 5%. T-test is used to compare the statistical difference of concentration indexes between the utilization of outpatient service and utilization of inpatient service within each year. Analysis of variance is used the compare the statistical difference of concentration indexes among the year of 1993, 1998, 2003 and 2008.

ISSN: 1475-9276