Table 5.

Decomposition of concentration index of incidence in elderly households with chronic disease patients (at a non-food expenditure threshold of 40%)

		Rural areas				Urban areas
		Elasticity	Concentration index (CI)	Contribution to CI	Contribution to CI %	Elasticity	Concentration index (CI)	Contribution to CI	Contribution to CI %
Marital status		0.6974	0.0397	0.0277	−18.61%	0.865	0.0591	0.0511	−35.66%
Household size		−0.7269	0.1474	−0.1071	72.00%	−1.2236	0.0859	−0.1051	73.35%
Receipt of economic assistance		0.1117	−0.0884	−0.0098	6.64%	−0.0936	−0.1343	0.0126	−8.79%
Provision of economic assistance		−0.2047	0.0906	−0.0185	12.43%	−0.1981	0.0741	−0.0147	10.26%
Providing care		−0.0349	0.0784	−0.0027	1.81%	−0.0047	0.073	−0.0003	0.21%
Household members > 65 years		0.1562	−0.132	−0.0206	13.84%	0.3505	−0.0729	−0.0256	17.86%
Household members with ≥ 2 chronic diseases		0.7874	−0.0161	−0.0127	8.53%	1.812	−0.0433	−0.0784	54.71%
Per capita income		−0.3505	0.0901	−0.0316	21.22%	−1.4713	0.0434	−0.0638	44.52%
Health insurance		0.8086	0.0048	0.0039	−2.61%	−1.2086	−0.0014	0.0017	−1.19%
Outpatient service	Health care post or Village clinic	0.0725	−0.0402	−0.0029	1.95%	−0.0566	−0.3169	0.0179	−12.49%
	First-level hospital	0.056	0.0364	0.002	−1.34%	0.0566	−0.0341	−0.0019	1.33%
	Second-level hospital and above	0.0722	0.0093	0.0007	−0.47%	0.1111	0.1978	0.022	−15.35%
Inpatient service	First-level hospital	0.0388	−0.143	−0.0055	3.70%	−0.0022	−0.1359	−0.0016	1.12%
	Second-level hospital and above	0.1232	−0.0368	−0.0045	3.02%	0.4483	0.099	0.0444	−30.98%
Total				−0.1619	108.84%			−0.1417	98.88%