General practice for the poor and specialist services for the rich: inequality evidence from a cross-sectional survey on Hangzhou residents, China

Zhang, Tao; Liu, Chaojie; Liu, Lingrui; Gan, Yong; Lu, Wei; Tao, Hongbing

doi:10.1186/s12939-019-0966-6

International Journal for Equity in Health

Table 2 Decomposition of concentration index of probability and frequency of GP visits

From: General practice for the poor and specialist services for the rich: inequality evidence from a cross-sectional survey on Hangzhou residents, China

variables	C_k	Probability of GP visits (n = 1048)			Frequency of GP visits (n = 427)
variables	C_k	Margin	Absolute Contribution	Percentage contribution	Margin	Absolute Contribution	Percentage contribution
Gender
Male	Ref.				Ref.
Female	−0.0568	0.4081	−0.0339	73.11	1.4663*	−0.0238	17.68
Age (years)
18–25	Ref.				Ref.
26–35	0.1422	0.4434	0.0704	− 151.80	2.6450*	0.0820	−60.94
36–45	0.1159	0.4088	0.0193	−41.59	3.8130*	0.0351	−26.11
46–55	− 0.2663	0.4815	− 0.0298	64.30	4.9047*	−0.0593	44.08
≥ 56	−0.3595	0.5967*	−0.0385	82.88	5.3661**	−0.0675	50.16
Household registration
Non-local	Ref.				Ref.
Local	0.0789	0.3919	0.0407	−87.79	2.0609**	0.0418	−31.07
Marital status
Single	Ref.				Ref.
Married	0.0613	0.4114	0.0439	−94.61	1.5058*	0.0314	−23.31
Divorced/separated/widowed	−0.0338	0.4469	−0.0022	4.77	0.4769**	− 0.0005	0.34
Per Capita Monthly household income (¥)
< 3000	Ref.
3000-	−0.6164	0.5394*	−0.2151	463.67	3.1450**	−0.2449	181.95
5000-	−0.1106	0.5343*	−0.0347	74.71	3.1884*	−0.0404	30.00
8000-	0.2900	0.5479*	0.0621	− 133.88	2.7689	0.0613	−45.54
≥ 10,000	0.7137	0.5268*	0.2537	− 546.85	3.0143*	0.2835	−210.59
Education
Primary school or below	Ref.				Ref.
Junior high school	−0.4104	0.2543*	− 0.0241	51.84	1.4089	−0.0260	19.33
Senior high school	−0.1018	0.2804*	−0.0176	37.95	1.5476	−0.0190	14.10
Bachelor degree	0.0373	0.2830*	0.0107	−22.98	1.6335	0.0120	−8.93
Postgraduate degree	0.3241	0.2238*	0.0359	−77.47	1.2210	0.0383	−28.45
Medical insurance
Uninsured	Ref.				Ref.
Insured	0.0158	0.4198*	0.0146	−31.54	1.6416	0.0112	−8.30
Contracted GP
No	Ref.				Ref.
Yes	−0.0074	0.5864**	−0.0035	7.44	1.5024	− 0.0017	1.28
Walking distance of nearest CHC (minutes)
<15	Ref.				Ref.
15–30	−0.0347	0.4071	−0.0132	28.55	1.4540	−0.0092	6.86
>30	0.0770	0.4085	0.0195	−42.13	1.9488	0.0182	−13.53
Chronic diseases
No	Ref.				Ref.
Yes	−0.1985	0.5013*	−0.0388	83.69	1.4941	−0.0226	16.79
Self-rated health status
Bad	Ref.				Ref.
Fair	−0.0209	0.3230*	−0.0077	16.65	1.5555	−0.0072	5.37
good	0.0196	0.3106*	0.0069	−14.78	1.5650	0.0067	−5.01
LR chi2		181.57**			79.80**
R²		0.1281			0.1207

Note:*:p < 0.05, * *: p < 0.001

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