Measurement and decomposition of income-related inequality in self-rated health among the elderly in China

Table 4 Inequality decompositions for CCI

Variables	Coefficients(λ_j)	Means	Concentration Index	Contributions to CCI	Contributions (%)
Age	0.0007	67.63	− 0.002	− 0.0004	− 0.69
Male	0.030	0.52	0.017	0.001	1.86
Middle school and above	0.010	0.22	0.357	0.003	5.40
Married	−0.016	0.80	0.025	− 0.001	−2.25
Employed	0.065	0.57	−0.103	−0.015	−25.83
Rural	−0.033	0.75	−0.172	0.017	29.42
Regions
Central	0.023	0.34	−0.038	− 0.001	−1.98
Eastern	0.042	0.31	0.083	0.004	7.44
With chronic diseases	−0.108	0.74	0.003	−0.0009	−1.57
With physical disabilities	−0.068	0.32	−0.083	0.007	12.42
Having ever smoked or smoking now	−0.014	0.46	−0.016	0.0004	0.71
Taking medical examination during the last two years	−0.015	0.46	0.080	−0.002	−3.71
Level of social medical insurance
Middle	0.026	0.07	0.245	0.002	3.05
High	0.026	0.17	0.642	0.011	19.31
Equivalized per capita income (thousand Yuan)	0.0005	13.78	0.617	0.017	28.16
Main avoidable social factors(Income, residence, region, medical insurance, employment)				0.035	59.58
Total				0.042	71.75

ISSN: 1475-9276