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

Table 7

Decomposition of concentration index of incidence of receiving antidiabetic medication among middle-aged and elderly diabetes patients.

	Urban				Rural
	Elasticity	Concentration index	Contribution	Percentage contribution (%)	Elasticity	Concentration index	Contribution	Percentage contribution (%)
Gender (ref. female)	−1.5522	0.0039	−0.0061	−5.27	−0.2610	0.0145	−0.0038	−1.85
Age (ref. ≤ 55)
56–65	−0.0895	−0.0168	0.0015	1.31	0.2074	−0.0434	−0.0090	−4.46
>65	−0.2097	−0.0657	0.0138	12.01	0.0559	0.1625	0.0091	4.45
Ethnic group (ref. Han)	−0.2837	−0.0181	0.0051	4.47	−1.4342	−0.0273	0.0392	19.18
Marital status (ref. divorced/single)	0.6566	0.0242	0.0159	13.84	0.5534	0.0173	0.0118	8.49.
Education level (ref. less than primary school)
Less than lower secondary	0.0158	−0.0324	−0.0005	−0.45	0.0762	−0.0747	−0.0057	−2.79
Upper secondary & vocational training	0.1479	0.1369	0.0202	17.64	0.1107	0.5213	0.0577	28.27
Family size (ref. ≤ 2)	0.1256	−0.1058	−0.0133	−11.58	0.2597	0.1717	0.0446	21.84
Household income per capita (log)	0.5740	0.0596	0.0342	29.79	0.9478	0.0762	0.0722	35.39
Type of labour (ref. government & institutions)
Farmer	−0.3084	−0.0317	0.0098	8.52	−0.1197	0.0849	−0.0102	−4.98
Self-employed/employed	0.1532	0.0227	0.0035	3.03	0.4438	0.0031	0.0014	0.67
Never drunk (ref. history of drinking)	−0.2135	0.0098	−0.0021	−1.82	0.4319	0.0110	0.0048	2.33
Never smoked (ref. history of smoking)	−0.1346	0.0027	−0.0004	−0.35	−0.1928	0.0120	−0.0023	−1.13
ADL (ref. without any ADL)	0.1245	−0.0213	−0.0027	−2.31	0.0582	−0.1189	−0.0069	−3.39
BMI (ref. ≤ 18.5)
18.6–24.1	0.0011	0.1166	0.0001	0.11	0.0474	−0.0905	−0.0043	−2.10
>24.1	−0.0966	−0.0805	0.0078	6.77	0.2291	0.0974	0.0223	10.93
Self-reported health status	−1.9222	−0.0114	0.0219	19.09	−0.7048	−0.0149	0.0105	5.15
Having hypertension (ref. no)	0.0675	−0.0264	−0.0018	−1.55	−0.0125	0.0255	−0.0003	−0.16
Total				93.25	107.35