Decomposing the causes of socioeconomic-related health inequality among urban and rural populations in China: a new decomposition approach

Cai, Jiaoli; Coyte, Peter C.; Zhao, Hongzhong

doi:10.1186/s12939-017-0624-9

International Journal for Equity in Health

Table 4 RIF-CI-OLS decomposition estimates of covariates on socioeconomic-related health inequality

From: Decomposing the causes of socioeconomic-related health inequality among urban and rural populations in China: a new decomposition approach

Variables	Category	Urban		Rural
Variables	Category	Coef.	P-value	Coef.	P-value
Demographic characteristics
Gender	Female	Reference		Reference
Gender	Male	−0.001	0.783	−0.011***	0.000
Age group	Quartile 4 (56+)	Reference
	Quartile 1 (18–33)	−0.031***	0.000	−0.049***	0.000
	Quartile 2 (33–43)	−0.008	0.113	−0.020***	0.000
	Quartile 3 (43–56)	0.005	0.273	−0.012***	0.000
Ethnicity	Ethnic Minority	Reference		Reference
Ethnicity	Han	0.015***	0.005	−0.007**	0.020
Marital status	Divorced, separated,and widowed	Reference		Reference
	Married	−0.055***	0.000	−0.039***	0.000
	Single	−0.023***	0.002	−0.036***	0.000
Household size		0.001	0.244	−0.001	0.108
Health insurance	Yes = 1; No = 0	−0.013***	0.000	0.012***	0.000
Socioeconomic status
Per capita household income		−0.048***	0.000	−0.026***	0.000
Work status	Work = 1; Not working = 0	0.036***	0.000	0.018***	0.000
Education degree	Primary education	Reference		Reference
	Secondary education	−0.048***	0.000	−0.009***	0.000
	Tertiary education	0.039***	0.000	0.102***	0.000
Lifestyle factors
Smoking history	Yes = 1; No = 0	0.003	0.451	−0.001	0.657
Drinking alcohol	Yes = 1; No = 0	0.009***	0.007	0.005*	0.064
BMI	Normal weight	Reference		Reference
	Underweight	0.050***	0.000	0.046***	0.000
	Overweight	−0.004	0.231	−0.007	0.258
	Obese	0.015***	0.001	0.000	0.988
Home environment
Tap water	Yes = 1; No = 0	−0.002	0.680	−0.016***	0.000
Flush toilet	Yes = 1; No = 0	−0.015	0.302	−0.009***	0.001
Region	Eastern	Reference		Reference
	Middle	−0.003	0.401	−0.004	0.124
	Western	−0.010**	0.016	−0.005*	0.065
Year	1991	Reference		Reference
	1993	0.003	0.490	0.010***	0.002
	1997	0.045***	0.000	0.029***	0.000
	2000	0.062***	0.000	0.039***	0.000
	2004	0.061***	0.000	0.033***	0.000
	2006	0.045***	0.000	0.024***	0.000
Constant		0.420***	0.000	0.246***	0.000
Observations		15,981	15,981	31,958	31,958

*** p < 0.01, ** p < 0.05, * p < 0.1
Coef Coefficient, BMI Body mass index

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