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Soc Sci Med. 2014 Feb;102:174-82. doi: 10.1016/j.socscimed.2013.11.025. Epub 2013 Nov 21.

Income inequality and sexually transmitted in the United States: who bears the burden?

Author information

1
Harvard School of Public Health, USA. Electronic address: gharling@hsph.harvard.edu.
2
Harvard School of Public Health, USA.
3
Harvard School of Public Health, USA; Africa Centre for Health and Population Studies, South Africa.

Abstract

Three causal processes have been proposed to explain associations between group income inequality and individual health outcomes, each of which implies health effects for different segments of the population. We present a novel conceptual and analytic framework for the quantitative evaluation of these pathways, assessing the contribution of: (i) absolute deprivation - affecting the poor in all settings - using family income; (ii) structural inequality - affecting all those in unequal settings - using the Gini coefficient; and (iii) relative deprivation - affecting only the poor in unequal settings - using the Yitzhaki index. We conceptualize relative deprivation as the interaction of absolute deprivation and structural inequality. We test our approach using hierarchical models of 11,183 individuals in the National Longitudinal Study of Adolescent Health (Add Health). We examine the relationship between school-level inequality and sexually transmitted infections (STI) - self-reported or laboratory-confirmed Chlamydia, Gonorrhoea or Trichomoniasis. Results suggest that increased poverty and inequality were both independently associated with STI diagnosis, and that being poor in an unequal community imposed an additional risk. However, the effects of inequality and relative deprivation were confounded by individuals' race/ethnicity.

KEYWORDS:

Add Health; Income; Income inequality; Relative deprivation; Sexually transmitted infections; United States

PMID:
24565155
DOI:
10.1016/j.socscimed.2013.11.025
[Indexed for MEDLINE]
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