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Role of depressive symptoms in explaining socioeconomic status disparities in dietary quality and central adiposity among US adults: a structural equation modeling approach
American Journal of Clinical Nutrition, 08/27/09

Beydoun MA et al. – Future mental health interventions targeted at reducing SES disparities in dietary quality and central adiposity may have different effects across sex–ethnicity groups.

Methods

Extensive data on US adults aged 30–64 y from the Healthy Aging in Neighborhoods of Diversity across the Life Span (HANDLS) study were used in multiple linear logistic regression models and structural equation models to test pathway associations.
Measures included Center for Epidemiologic Studies–Depression (CES–D) scores, 2005 Healthy Eating Index (HEI) values, and dual–energy X–ray absorptiometry.
Sample sizes for most analyses ranged between 1789 for anthropometric outcomes and 1227 for trunk fat outcomes.

Results

The Epidemiologic Studies–Depression (CES–D) score was associated with lower Healthy Eating Index (HEI) scores in all sex–ethnicity groups, except in African American men, and with higher waist–to–hip ratios (WHRs) among African American women.
A CES–D score >=16 was positively associated with waist circumference (WC) and with trunk fat among white women and men, respectively.
Socioeconomic status (SES) was positively related to central adiposity among African American men (central obesity and WC) and African American women (central obesity and percentage trunk fat) but was inversely related to central adiposity among white women.
Among whites only, the total positive effect of SES on HEI was significantly mediated by CES–D score.
Among white women, the total inverse effect of SES on WC and WHR was significantly explained by the CES–D score and HEI, whereas the CES–D score was positively associated with WHR among African American women, independently of SES.

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