Income inequality among general practitioners in Iran: a decomposition approach

Table 4 Decomposition of GPs’ income inequality by demographic and practice factors

Variables	Population Share^a	Income Share^b	Income Mean (PPP^c)	Gini Coefficient	Gini Decomposition
Variables	Population Share^a	Income Share^b	Income Mean (PPP^c)	Gini Coefficient	Within	Between	Overlap	Overall
Gender
Male	0.534	0.639	8339.10	0.349	0.192 (0.476)	0.106 (0.263)	0.104 (0.260)	0.403
Female	0.466	0.361	5389.94	0.434
Overall	1	1		0.403
Age
26–35 years	0.255	0.204	5919.32	0.418	0.109 (0.271)	0.076 (0.190)	0.216 (0.538)	0.403
36–45 years	0.291	0.299	7161.36	0.378
46–55 years	0.353	0.383	7738.72	0.392
≥ 56 years	0.101	0.094	6439.79	0.426
Overall	1	1		0.403
Marital status
Single	0.186	0.146	5438.25	0.379	0.288 (0.716)	0.044 (0.111)	0.069 (0.172)	0.403
Married	0.814	0.854	7304.91	0.404
Over all	1	1		0.403
Practice setting
Salaried	0.442	0.346	5471.60	0.389	0.201 (0.498)	0.098 (0.244)	0.103 (0.256)	0.403
Self-employed	0.558	0.654	8134.69	0.388
Overall	1	1		0.403
Family Physician
No	0.886	0.881	6915.29	0.414	0.327 (0.811)	0.010 (0.026)	0.065 (0.161)	0.403
Yes	0.114	0.109	7153.44	0.306
Overall	1	1		0.403
Practice location
Capital of the country	0.372	0.414	6306.80	0.434	0.101 (0.250)	0.161 (0.399)	0.140 (0.349)	0.403
Province centers	0.289	0.235	6808.16	0.406
Other cities, villages	0.339	0.351	7435.22	0.337
Overall	1	1		0.403
Practice experience
0–5 years	0.266	0.216	5624.94	0.375	0.074 (0.184)	0.116 (0.287)	0.212 (0.527)	0.403
6–10 years	0.161	0.143	6659.05	0.463
11–15 years	0.192	0.196	6860.18	0.358
16–20 years	0.218	0.260	8358.44	0.370
≥ 21 years	0.163	0.185	7670.13	0.403
Overall	1	1		0.403

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