Table 4.

Decomposition of CIs of single and multiple NCD morbidity, adults aged 50+, China (2008–2010), SAGE Wave 1

Determinants	Concentration index (CK)	Single Morbidity			Multimorbidity
		Elasticity	Contribution to CK -0.0365	% Contribution	Elasticity	Contribution to CK -0.0801	% Contribution
Wealth
Q5 richest Base
Q4	0.3471	0.0066	0.0023	−6.31	0.0315	0.0109	−13.65
Q3	−0.0936	−0.0057	0.0005	−1.47	0.0272	−0.0025	3.18
Q2	−0.4848	−0.0032	0.0015	−4.20	0.0320	−0.0155	19.39
Q1 poorest	−0.8357	0.0071	−0.0059	16.18	0.0288	−0.0241	30.07
Total			−0.0015	4.20		−0.0312	38.98
Sex
Male Base
Female	0.0036	0.0013	0.0000	−0.01	0.0463	0.0002	−0.21
Age
50-59 Base
60-69	−0.0352	0.0414	−0.0015	4.01	0.1294	−0.0046	5.69
70-79	−0.1260	0.0301	−0.0038	10.42	0.1144	−0.0144	18.00
80+	−0.2470	0.0090	−0.0022	6.08	0.0287	−0.0071	8.84
Total			−0.0075	20.51		−0.0261	32.54
Residence
Urban Base
Rural	−0.1966	0.0675	−0.0133	36.41	0.0361	−0.0071	8.86
Marital Status
Married/Cohabit Base
Unmarried	−0.4341	0.0006	−0.0002	0.67	−0.0002	0.0001	−0.11
Widow/separate	−0.2435	0.0092	−0.0023	6.17	0.0076	−0.0018	2.30
Total			−0.0025	6.85		−0.0018	2.19
Education level
No school Base
< 6 years	−0.1044	−0.0005	0.000	−0.15	−0.0013	0.0001	−0.16
Primary	0.0334	−0.0059	0.000	0.54	−0.0075	−0.0003	0.32
Secondary	0.1424	0.0024	0.000	−0.92	0.0038	0.0005	−0.68
High School	0.3187	−0.0143	−0.005	12.53	−0.0166	−0.0053	6.59
University	0.4871	−0.0039	−0.002	5.26	−0.0041	−0.0020	2.52
Total			−0.0063	17.27		−0.0069	8.59
Work Status
Never Worked Base
Currently working	−0.0857	0.0183	−0.0016	4.31	0.0144	−0.0012	1.54
Currently not working	0.1208	0.0407	0.0049	−13.48	0.0891	0.0108	−13.43
Total			0.0033	−9.17		0.0095	−11.89
Body Mass Index
Underweight Base
Normal	−0.0435	0.1499	−0.0065	17.87	0.2032	−0.0088	11.03
Overweight	0.1041	0.1284	0.0134	−36.66	0.1976	0.0206	−25.69
Obese	0.0851	0.0255	0.0022	−5.94	0.0563	0.0048	−5.98
Total			0.0090	−24.73		0.0165	−20.63
Physical Activity
High Base
Moderate	0.0743	0.0036	0.0003	−0.74	0.0258	0.0019	−2.39
Low	0.0237	0.0008	0.0000	−0.06	0.0432	0.0010	−1.28
Total			0.0003	−0.80		0.0029	−3.67
Smoking
Non Smoker Base
Former smoker	0.0438	−0.0002	0.0000	0.02	0.0117	0.0005	−0.64
Current smoker	−0.0901	−0.0032	0.0003	−0.80	−0.0028	0.0003	−0.31
Current daily	−0.0556	−0.0196	0.0011	−2.98	−0.0244	0.0014	−1.70
Total			0.0014	−3.76		0.0021	−2.65
Alcohol Drinking
No Base
Yes	−0.0069	0.0240	−0.0002	0.46	0.0288	−0.0002	0.25
Fruit/Veg Intake
Adequate Base
Inadequate	−0.1760	−0.0049	0.0009	−2.38	0.0011	−0.0002	0.24
Total			−0.0163			−0.0421
Residual			−0.0201			−0.0380