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Socio-economic status influences the relationship between obesity and antenatal depression: Data from a prospective cohort study

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posted on 2016-10-07, 15:21 authored by E. Molyneaux, D. Pasupathy, L. C. Kenny, L. M. McCowan, R. A. North, G. A. Dekker, J. J. Walker, Philip N. Baker, L. Poston, L. M. Howard, SCOPE consortium
BACKGROUND: Obesity has been associated with increased risk of antenatal depression, but little is known about this relationship. This study tested whether socio-economic status (SES) influences the relationship between obesity and antenatal depression. METHODS: Data were taken from the Screening for Pregnancy Endpoints (SCOPE) cohort. BMI was calculated from measured height and weight at 15±1 weeks' gestation. Underweight women were excluded. SES was indicated by self-reported household income (dichotomised around the median: low SES ≤£45,000; high SES >£45,000). Antenatal depression was defined as scoring ≥13 on the Edinburgh Postnatal Depression Scale at both 15±1 and 20±1 weeks' gestation, to identify persistently elevated symptoms of depression. RESULTS: Five thousand five hundred and twenty two women were included in these analyses and 5.5% had persistently elevated antenatal depression symptoms. There was a significant interaction between SES and BMI on the risk of antenatal depression (p=0.042). Among high SES women, obese women had approximately double the odds of antenatal depression than normal weight controls (AOR 2.11, 95%CI 1.16-3.83, p=0.014, adjusted for confounders). Among low SES women there was no association between obesity and antenatal depression. The interaction effect was robust to alternative indicators of SES in sensitivity analyses. LIMITATIONS: 1) Antenatal depression was assessed with a self-reported screening measure; and 2) potential mediators such as stigma and poor body-image could not be examined. CONCLUSIONS: Obesity was only associated with increased risk of antenatal depression among high SES women in this sample. Healthcare professionals should be aware that antenatal depression is more common among low SES women, regardless of BMI category.

History

Citation

Journal of Affective Disorders, 2016, 202, pp. 124-127

Author affiliation

/Organisation/COLLEGE OF MEDICINE, BIOLOGICAL SCIENCES AND PSYCHOLOGY

Version

  • VoR (Version of Record)

Published in

Journal of Affective Disorders

Publisher

Elsevier for International Society for Affective Disorders

issn

0165-0327

eissn

1573-2517

Acceptance date

2016-05-25

Copyright date

2016

Available date

2016-10-07

Publisher version

http://www.sciencedirect.com/science/article/pii/S0165032716302592

Language

en

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