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Econ Hum Biol. 2017 Aug;26:144-150. doi: 10.1016/j.ehb.2017.03.005. Epub 2017 Mar 31.

Obesity and its socioeconomic determinants in Iran.

Author information

1
Social Determinants of Health Research Center, Shahroud University of Medical Sciences, Shahroud, Iran. Electronic address: emamian@shmu.ac.ir.
2
Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran.
3
Department of Informatics, Evidence and Research, World Health Organization, CH-1211 Geneva, Switzerland.
4
Social Determinants of Health Research Center; Department of Social Medicine, School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran.
5
Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.

Abstract

OBJECTIVE:

To investigate the socioeconomic inequality of obesity and its determinants in Iran.

METHODS:

Data was from Iran's surveillance system for risk factors of non-communicable diseases which was conducted on 89,400 individuals aged 15-64 years in 2005. Principal component analysis was used to create a new variable for defining socioeconomic status of participants. We assessed inequality by calculating a slop index of inequality and concentration index for obesity. Oaxaca-Blinder decomposition analysis was used to determine the determinants of inequality.

RESULTS:

The slop index of inequality and concentration index for obesity was -13.1 (95% Confidence Intervals [CI]: -16.3 to -9.8) percentage points and -0.123, respectively. The level of inequality varied widely between different provinces in Iran and was more severe in women and urban population. Obesity persisted in 20.2% (95% CI: 19.4-20.9) of the low-socioeconomic group and 11.0% (95% CI: 10.5-11.6) of the high-socioeconomic group. More than 90% of this gap was due to differences of independent variables (mainly age, gender and marital status) in two socioeconomic status groups.

CONCLUSIONS:

A pro-rich inequality existed in the obesity in Iran. Older age, female gender and rural residency contributed most to the economic inequality of obesity.

KEYWORDS:

Health status disparities; Health surveys; Inequality; Iran; Socioeconomic factors

PMID:
28395273
DOI:
10.1016/j.ehb.2017.03.005
[Indexed for MEDLINE]

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