Improving health equity: changes in self-assessed health across income groups in China

Table 3 Rates of poor self-assessed health in different income groups

Year	Prevalence of poor self-rated health by income quintile					Average poor self-rated health	Concentration index(SE)	Standardized CIN(SE)^a
	Poorest	2nd	Middle	4th	Richest
2010	22.28%	16.43%	13.71%	11.83%	9.82%	14.56%	−0.167 (0.008)	−0.088 (0.007)
2014	20.30%	16.43%	12.81%	12.43%	8.78%	14.00%	−0.157 (0.008)	−0.065 (0.007)
change	−1.98%	−0.00%	−0.90%	0.60%	−1.04%	−0.56%	0.010	0.013
Χ²	12.74***	0.24	5.98*	1.12	0.037	7.75**
P	< 0.001	0.623	0.014	0.290	0.848	0.005

Note: weighted proportions accounting for sampling design were used
*P < 0.05, **P < 0.01, ***P < 0.001; CIN means the concentration index
^acontrolling for age, gender, marital status, occupation, education, residence and region

ISSN: 1475-9276