The association between obesity, depression, and educational attainment in women: the mediating role of body image dissatisfaction.
OBJECTIVE
We examine the mediating role of body image dissatisfaction (BID) on the association between obesity and depression and the variation of this association as a function of years of education among a population-based sample of women aged 40-65 years.


METHODS
A series of sample-weighted logistic regression models were used to estimate the associations between obesity, BID, and depression, stratified by educational attainment. Data were obtained from a structured telephone interview of 4543 female health plan enrollees, including self-reported height and weight, the Patient Health Questionnaire assessment of depression, and a single-item measure of BID.


RESULTS
Among those with <16 years of education, in both the unadjusted and adjusted models, obesity and BID were significantly associated with depression. Similarly, among those with ≥ 16 years of education, obesity and BID were significantly associated with depression in the unadjusted models. However, in the adjusted model, only BID was associated with depression. A formal test for mediation suggests that the association between obesity and depression was mediated by BID regardless of level of education.


CONCLUSIONS
Our data suggest that BID-mediated the obesity-depression association. In addition, obesity and BID may be salient risk factors for depression among middle-aged women as a function of the level of education.
School of Social Work, University of Washington, Seattle, WA 98105-6299, USA. gavina@u.washington.edu
Amelia R
AR
Gavin
Greg E
GE
Simon
Evette J
EJ
Ludman
D000328:Adult; D000368:Aged; D001828:Body Image; D001835:Body Weight; D003863:Depression / Q000523:psychology*; D003866:Depressive Disorder / Q000523:psychology*; D004522:Educational Status; D005260:Female; D006304:Health Status; D006306:Health Surveys; D006801:Humans; D016015:Logistic Models; D008875:Middle Aged; D009765:Obesity / Q000523:psychology*; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires; D014930:Women / Q000523:psychology*