Table 4.

Decomposition of concentration index for diabetes and prediabetes

Socio-economic variables	Diabetes				Prediabetes
	Elasticity	CI	Contribution to overall CI = 0.275		Elasticity	CI	Contribution to overall CI = 0.18
			Absolute contribution	Percentage contribution			Absolute contribution	Percentage contribution
Age
18–34 (Ref)
35–49	0.228	− 0.015	− 0.003	− 1.217	0.073	− 0.015	− 0.001	− 0.597
50–64	0.205	− 0.025	− 0.005	− 1.875	0.047	− 0.025	− 0.001	− 0.667
65 and above	0.112	− 0.049	− 0.006	− 2.002	0.018	− 0.049	− 0.001	− 0.501
Total			− 0.014	− 5.094			− 0.003	− 1.765
Sex
Male (Ref)
Female	− 0.067	− 0.011	0.001	0.273	0.00004	− 0.011	− 4.666e − 07	− 0003
Level of education
No education (Ref)
Primary	0.076	− 0.186	− 0.014	− 5.082	− 0.031	− 0.186	0.006	3.182
Secondary	0.059	0.182	0.011	3.92	− 0.036	0.182	− 0.007	− 3.672
Higher	0.015	0.467	0.007	2.614	− 0.034	0.467	− 0.016	− 9.022
Total			0.004	1.452			− 0.017	− 9.512
Wealth index
Poorest (Ref)
Poor	− 0.006	− 0.518	0.003	1.147	− 0.027	− 0.518	0.014	7.622
Middle	0.034	− 0.015	− 0.001	− 0.186	− 0.004	− 0.015	0.0001	0.032
Richer	0.089	0.491	0.043	15.793	0.056	0.491	0.028	15.221
Richest	0.158	1.000	0.158	57.360	0.105	1.000	0.105	58.488
Total			0.203	74.114			0.1471	81.363
Currently working
No (Ref)
Yes	− 0.145	− 0.177	0.026	9.328	− 0.039	− 0.177	0.007	3.881
Overweight or obesity
No (Ref)
Yes	0.095	0.327	0.031	11.372	0.04	0.327	0.013	7.225
Watching television (TV)
No (Ref)
Yes	0.020	0.715	0.014	5.175	− 0.01	0.715	− 0.007	− 3.815
Exposure to radio
No (Ref)
Yes	0.004	0.292	0.001	0.476	0.001	0.292	0.0003	0.185
Smoked/used tobacco
No (ref)
Yes	− 0.009	− 0.160	0.001	0.502	− 0.008	− 0.160	0.001	0.687
Caffeinated drink
No (ref)
Yes	0.005	0.163	0.001	0.297	0.003	0.163	0.0004	0.236
Place of residence
Rural (Ref)
Urban	0.003	0.514	0.002	0.582	0.002	0.514	0.001	0.517
Division
Barisal (Ref)
Chattogram	− 0.004	0.151	− 0.001	− 0.222	− 0.038	0.151	− 0.006	− 3.180
Dhaka	0.050	0.314	0.016	5.665	0.044	0.314	0.014	7.676
Khulna	− 0.034	0.059	− 0.002	− 0.737	− 0.066	0.059	− 0.004	− 2.174
Mymensingh	− 0.010	− 0.229	0.002	0.834	− 0.027	− 0.229	0.006	3.443
Rajshahi	− 0.018	− 0.117	0.002	0.767	− 0.08	− 0.117	0.009	5.242
Rangpur	− 0.048	− 0.340	0.016	5.927	− 0.071	− 0.34	0.024	13.395
Sylhet	− 0.002	− 0.032	0.0001	0.022	− 0.025	− 0.032	0.001	0.443
Total			0.033	12.256			0.044	24.845
Explained CI			0.303	110.733			0.187	100.847
Residual CI			− 0.028	− 10.733			− 0.007	− 0.847