Table 3.

Crude and Adjusted Concentration Indexes of Catastrophic Health Expenditure Over Years

Year	Concentration Index			Adjusted Concentration Index
	Index	Std. Error	p	Index	Std. Error	p
1991	−0.192	0.044	<0.001	−0.202	0.046	<0.001
1993	−0.260	0.056	<0.001	−0.268	0.058	<0.001
1997	−0.215	0.051	<0.001	−0.223	0.053	<0.001
2000	−0.196	0.038	<0.001	−0.208	0.040	<0.001
2004	−0.323	0.036	<0.001	−0.354	0.039	<0.001
2006	−0.446	0.040	<0.001	−0.486	0.043	<0.001
2009	−0.451	0.038	<0.001	−0.494	0.041	<0.001
2011	−0.428	0.036	<0.001	−0.459	0.039	<0.001
2015	−0.566	0.031	<0.001	−0.613	0.034	<0.001