BMC Health Services Research

Table 3 Concentration Index from 1991 to 2011

From: Prevalence and income-related equity in hypertension in rural China from 1991 to 2011: differences between self-reported and tested measures

Year	Self-reported hypertension			Tested hypertension
Year	C	95%CI		C	95%CI
1991	0.118	0.023	0.213	0.088	0.044	0.132
1993	0.144	0.055	0.232	−0.003	− 0.043	0.038
1997	0.064	−0.020	0.148	−0.008	−0.040	0.025
2000	0.052	−0.008	0.112	0.010	−0.020	0.040
2004	0.110	0.058	0.161	0.031	0.002	0.059
2006	0.119	0.071	0.168	−0.030	−0.058	−0.001
2009	0.065	0.026	0.104	0.006	−0.020	0.032
2011	0.032	−0.002	0.065	−0.024	−0.047	− 0.00009

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ISSN: 1472-6963

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