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 1 Descriptive statistics of the sample

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

Variable	Category	Urban (n = 15,981)		Rural (n = 31,958)		P-value
Variable	Category	Mean	SD	Mean	SD
New health score	Higher score indicates better health.	0.525	0.163	0.550	0.171	<0.0001
SRH	1 = Poor; 2 = Fair; 3 = Good; 4 = Excellent	2.702	0.741	2.772	0.752	<0.0001
Demographic characteristics
Male	Male = 1; Female = 0	0.476	0.499	0.479	0.500	0.0352
Age group	Quartile 1 (18–33)	0.242	0.428	0.258	0.438	0.0001
	Quartile 2 (33–43)	0.223	0.416	0.240	0.427	<0.0001
	Quartile 3 (43–56)	0.257	0.437	0.271	0.444	0.0015
	Quartile 4 (56+)^a	0.279	0.448	0.232	0.422	<0.0001
Ethnicity	Han = 1; Ethnic Minority = 0	0.914	0.281	0.849	0.358	<0.0001
Marital status	Married	0.800	0.400	0.817	0.387	<0.0001
	Single	0.125	0.331	0.114	0.317	0.0002
	Divorced, separated, or widowed^a	0.075	0.263	0.069	0.254	0.0363
Household size		3.738	1.423	4.166	1.591	<0.0001
Health insurance	Yes = 1; No = 0	0.491	0.500	0.229	0.420	<0.0001
Socioeconomic status
Per capita household income	Log form	8.546	0.953	8.017	0.962	<0.0001
Work status	Work = 1; Not working = 0	0.620	0.486	0.774	0.419	<0.0001
Education degree	Primary^a	0.384	0.486	0.543	0.498	<0.0001
	Secondary	0.538	0.499	0.443	0.497	<0.0001
	Tertiary	0.078	0.268	0.013	0.114	<0.0001
Lifestyle factors
Smoking history	Yes = 1; No = 0	0.321	0.467	0.332	0.471	0.0109
Drinking alcohol	Yes = 1; No = 0	0.384	0.486	0.335	0.472	<0.0001
BMI	Underweight^a	0.069	0.253	0.080	0.271	<0.0001
	Normal weight	0.477	0.499	0.551	0.497	<0.0001
	Overweight	0.327	0.469	0.275	0.447	<0.0001
	Obese	0.112	0.315	0.082	0.274	<0.0001
Tap water	Yes = 1; No = 0	0.918	0.274	0.577	0.494	<0.0001
Flush toilet	Yes = 1; No = 0	0.620	0.485	0.212	0.409	<0.0001
Region	Eastern^a	0.410	0.492	0.404	0.491	0.0911
	Middle	0.337	0.473	0.331	0.470	0.1648
	Western	0.253	0.435	0.266	0.442	0.0028
Year	1991^a	0.156	0.363	0.171	0.376	<0.0001
	1993	0.149	0.356	0.162	0.369	0.0001
	1997	0.164	0.370	0.153	0.360	0.0040
	2000	0.163	0.369	0.163	0.369	0.9189
	2004	0.189	0.391	0.175	0.380	0.0001
	2006	0.180	0.384	0.176	0.380	0.2191

^arepresents the reference group
SRH Self-rated health, BMI Body mass index

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