Socioeconomic Factors and Inequality in the Prevalence and Treatment of Diabetes among Middle-Aged and Elderly Adults in China

Table 6

Decomposition of concentration index of self-reported diabetes prevalence among middle-aged and elderly adults.

	Urban				Rural
	Elasticity	Concentration index	Contribution	Percentage contribution (%)	Elasticity	Concentration index	Contribution	Percentage contribution (%)
Gender (ref. female)	−6.5950	−0.0019	0.0125	−11.95	−7.8291	0.0013	−0.0096	−5.97
Age (ref. ≤ 55)
56–65	0.1442	−0.0508	−0.0073	6.98	0.2118	−0.0834	−0.0177	−11.01
>65	0.6961	−0.0457	−0.0318	30.31	1.0458	0.0579	0.0606	37.75
Ethnic group (ref. Han)	−1.7174	0.0081	−0.0139	13.26	−3.7391	−0.0093	0.0348	21.68
Marital status (ref. divorced/single)	−2.6160	−0.0072	0.0188	−17.94	−1.8089	−0.0063	0.0114	7.10
Education level (ref. less than primary school)
Less than lower secondary	0.1140	−0.0124	−0.0014	1.35	−0.5347	−0.0047	0.0025	1.57
Upper secondary & vocational training	−0.1217	0.0214	−0.0026	2.48	0.0442	0.3213	0.0142	8.85
Family size (ref. ≤ 2)	−1.4028	−0.0069	0.0098	−9.37	−1.2574	0.0057	−0.0072	−4.47
Household income per capita (log)	−6.4597	0.0046	−0.0297	28.33	7.5399	0.0075	0.0565	35.23
Type of labour (ref. government & institutions)
Farmer	−0.5484	−0.0417	0.0229	−21.83	−0.2877	0.0098	−0.0028	−1.76
Self-employed/employed	0.6936	0.0027	0.0019	−1.79	−0.4344	0.0007	−0.0003	−0.19
Never drunk (ref. history of drinking)	−0.2423	0.0491	−0.0119	11.34	−1.1329	0.0080	−0.0091	−5.65
Never smoked (ref. history of smoking)	−1.0816	0.0147	−0.0159	15.19	−3.2010	0.0101	−0.0323	−20.16
ADL (ref. without any ADL)	0.1964	−0.0443	−0.0087	8.29	0.3602	−0.0139	−0.0050	−3.12
BMI (ref. ≤ 18.5)
18.6–24.1	−0.8901	0.0266	−0.0237	22.57	−0.6723	−0.0195	0.0131	8.17
>24.1	1.8871	−0.0075	−0.0142	13.49	3.2644	0.0134	0.0437	27.24
Self-reported health status	−4.1105	−0.0022	0.0090	−8.62	−2.8108	0.0059	−0.0166	−10.34
Having hypertension (ref. no.)	2.6581	−0.0104	−0.0276	26.35	5.3988	0.0051	0.0275	17.17
Total				108.44				102.09