Table 6: Decomposition of concentration index of self-reported diabetes prevalence among middle-aged and elderly adults.

UrbanRural
ElasticityConcentration indexContributionPercentage contribution (%)ElasticityConcentration indexContributionPercentage contribution (%)

Gender (ref. female)−6.5950−0.00190.0125−11.95−7.82910.0013−0.0096−5.97
Age (ref. ≤ 55)
 56–650.1442−0.0508−0.00736.980.2118−0.0834−0.0177−11.01
 >650.6961−0.0457−0.031830.311.04580.05790.060637.75
Ethnic group (ref. Han)−1.71740.0081−0.013913.26−3.7391−0.00930.034821.68
Marital status (ref. divorced/single)−2.6160−0.00720.0188−17.94−1.8089−0.00630.01147.10
Education level (ref. less than primary school)
 Less than lower secondary0.1140−0.0124−0.00141.35−0.5347−0.00470.00251.57
 Upper secondary & vocational training−0.12170.0214−0.00262.480.04420.32130.01428.85
Family size (ref. ≤ 2)−1.4028−0.00690.0098−9.37−1.25740.0057−0.0072−4.47
Household income per capita (log)−6.45970.0046−0.029728.337.53990.00750.056535.23
Type of labour (ref. government & institutions)
 Farmer−0.5484−0.04170.0229−21.83−0.28770.0098−0.0028−1.76
 Self-employed/employed0.69360.00270.0019−1.79−0.43440.0007−0.0003−0.19
Never drunk (ref. history of drinking)−0.24230.0491−0.011911.34−1.13290.0080−0.0091−5.65
Never smoked (ref. history of smoking)−1.08160.0147−0.015915.19−3.20100.0101−0.0323−20.16
ADL (ref. without any ADL)0.1964−0.0443−0.00878.290.3602−0.0139−0.0050−3.12
BMI (ref. ≤ 18.5)
 18.6–24.1−0.89010.0266−0.023722.57−0.6723−0.01950.01318.17
 >24.11.8871−0.0075−0.014213.493.26440.01340.043727.24
Self-reported health status−4.1105−0.00220.0090−8.62−2.81080.0059−0.0166−10.34
Having hypertension (ref. no.)2.6581−0.0104−0.027626.355.39880.00510.027517.17
Total108.44102.09