Socioeconomic gradient in physical activity: findings from the PERSIAN cohort study

Kazemi Karyani, Ali; Karmi Matin, Behzad; Soltani, Shahin; Rezaei, Satar; Soofi, Moslem; Salimi, Yahya; Moradinazar, Mehdi; Hajizadeh, Mohammad; Pasdar, Yahya; Hamzeh, Behrooz; Barzegar, Loghman; Haghdoost, Ali Akbar; Malekzadeh, Reza; Poustchi, Hossein; Mohammadi, Zahra; Faramarzi, Elnaz; Safarpour, Ali Reza; Pourfarzi, Farhad; Moosazadeh, Mahmood; Nejatizadeh, Azim; Farjam, Mojtaba; Vahabzadeh, Davoud; Ahmadi, Ali; Ghorat, Fereshteh; Ahmadi, Jafar; Mansour-Ghanaei, Fariborz; Mirjalili, Mohammad Reza; Eslami, Saeid; Maharlouei, Najmeh; Tabatabaei, Seyed Mehdi; Sarvandian, Sara; Najafi, Farid

doi:10.1186/s12889-019-7715-z

BMC Public Health

Table 3 Decomposition results of socioeconomic-related inequality in poor physical activity in Iran

From: Socioeconomic gradient in physical activity: findings from the PERSIAN cohort study

Variables	Marginal Effects	Elasticity	The concentration Index (C_k)	Absolute Contribution	Percentage contribution	Summed Percentage Contribution
Sex (ref: male)
Female	0.14	0.131	−0.067	−0.02	−21.83	−21.83
Age groups (ref: 35–44 years)
45–54	0.01	0.005	0.026	0.0003	0.30	−25.08
55–64	0.08	0.033	−0.125	− 0.01	−10.34
> =65	0.19	0.020	−0.295	−0.01	−15.04
Marital status (ref: single)
Married	−0.10	−0.152	0.024	−0.01	−9.19	−8.21
Widowed and divorced	−0.01	−0.001	− 0.288	0.00	0.97	−8.21
Smoking status (ref: never smoker)
Current smoker	0.03	0.006	−0.015	− 0.00024	−0.24	− 0.19
Former smoker	0.02	0.003	0.006	0.00005	0.05	− 0.19
Drug abuse (ref: no)
Yes	0.01	0.002	−0.030	−0.00017	−0.17	− 0.17
Alcohol drinking (ref: no)
Yes	0.01	0.002	0.172	0.00091	0.93	0.93
BMI (ref: Normal weight)
Underweight	−0.04	−0.001	−0.300	0.001	1.01	10.04
Overweight	0.06	0.044	0.048	0.01	5.22
Obese	0.11	0.057	0.027	0.004	3.80
Province (ref: Fars)
KSH	−0.10	−0.013	−0.07	0.002	2.07	−40.72
GU	−0.13	−0.018	− 0.16	0.01	6.89
EA	−0.22	−0.043	− 0.03	0.003	2.95
MA	−0.29	−0.039	0.13	−0.01	−12.84
SB	0.04	0.004	0.05	0.001	0.51
YA	−0.23	−0.028	0.16	−0.01	−11.56
KE	−0.01	−0.002	0.31	−0.001	−1.20
KH	0.08	0.009	−0.16	−0.004	−3.59
CB	−0.15	−0.013	0.45	−0.01	−14.76
HO	−0.15	−0.006	− 0.07	0.00	1.04
WA	−0.41	−0.017	− 0.20	0.01	8.49
AR	−0.17	−0.019	0.21	−0.01	−9.89
RK	−0.16	−0.006	0.59	−0.01	−8.83
Socioeconomic status (SES) (ref: 1st quintile)
2nd quintile	0.06	0.019	−0.397	−0.02	−19.00	205.32
3rd quintile	0.10	0.034	0.003	0.00	0.23
4th quintile	0.15	0.052	0.402	0.05	52.17
5th quintile (highest)	0.26	0.086	0.801	0.17	171.91
Explained				0.12		120.09
Residuals				−0.02		−20.09
Total NC				0.10		100.00

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ISSN: 1471-2458

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