Table 3.

Contributions to inequality in health literacy and information seeking from the health system

	Health literacy			Health information seeking from health system
	Concentration index	Contribution	Percentage contribution	Concentration index	Contribution	Percentage contribution
CI for adequate health literacy		0.0602			0.105
Horizontal Inequity (HI) index		0.0562			0.0965
Residual		0.0035			0.0016
Need factors
Age
Under 30 years	Ref.
30-59 years	0.0452	0.001	1.7344	0.0456	0.003	2.8194
60 and above	0.0406	0.0003	0.5711	0.042	0.0012	1.1009
Gender
Male	Ref.
Female	0.0034	0.0002	0.3267	0.0027	0.0002	0.2232
Self-reported disease
Hypertension	0.0498	0.0006	0.9983	0.0493	0.0013	1.2076
Diabetes	0.1018	0.001	1.6944	0.0987	0.0023	2.2121
Heart	0.1009	0.0001	0.2244	0.1014	0.0002	0.2003
Gastritis	-0.1254	0.0004	0.6179	-0.1271	0.0007	0.6699
Arthritis	0.1954	0	0.0536	0.2054	-0.0001	-0.1394
Hyperlipidemia	0.0752	0.0003	0.4157	0.0707	0	0.0371
Pulmonary	-0.0758	-0.0001	-0.1031	-0.0829	-0.0001	-0.1222
Sleepless	-0.005	0	0.0314	-0.0046	-0.0001	-0.1077
Non-need factors
Educational level
Primary or lower	Ref.
Secondary level	-0.0856	-0.0181	-30.156	-0.0864	-0.0075	-7.1422
College level	0.2342	0.0511	84.9174	0.2341	0.0332	31.6699
Marital status
Never-married	Ref.
Currently married	-0.0512	0.0006	0.9794	-0.0518	0.005	4.752
Divorced/separated/widowed	0.0223	0.0007	1.1733	0.0224	-0.0015	-1.3981
Household annual income (log of income per capita)	0.0439	0.0184	30.6448	0.0438	0.0656	62.5293

Decomposition based on Probit model results. Sample weights applied. Statistically significant estimates are in bold type (P < 0.05)