Impact of major depression on cardiovascular outcomes for individuals with hypertension: prospective survival analysis in UK Biobank

Graham, N. A., Ward, J., Mackay, D. , Pell, J. , Cavanagh, J., Padmanabhan, S. and Smith, D. J. (2019) Impact of major depression on cardiovascular outcomes for individuals with hypertension: prospective survival analysis in UK Biobank. BMJ Open, 9(9), e024433. (doi:10.1136/bmjopen-2018-024433)

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Abstract

Objectives: To assess whether a history of major depressive disorder (MDD) in middle-aged individuals with hypertension influences first-onset cardiovascular disease outcomes. Design: Prospective cohort survival analysis using Cox proportional hazards regression with a median follow-up of 63 months (702 902 person-years). Four mutually exclusive groups were compared: hypertension only (n=56 035), MDD only (n=15 098), comorbid hypertension plus MDD (n=12 929) and an unaffected (no hypertension, no MDD) comparison group (n=50 798). Setting: UK Biobank. Participants: UK Biobank participants without cardiovascular disease aged 39–70 who completed psychiatric questions relating International Classification of Diseases-10 Revision (ICD-10) diagnostic criteria on a touchscreen questionnaire at baseline interview in 2006–2010 (n=134 860). Primary and secondary outcome measures: First-onset adverse cardiovascular outcomes leading to hospital admission or death (ICD-10 codes I20–I259, I60–69 and G45–G46), adjusted in a stepwise manner for sociodemographic, health and lifestyle features. Secondary analyses were performed looking specifically at stroke outcomes (ICD-10 codes I60–69 and G45–G46) and in gender-separated models. Results: Relative to controls, adjusted HRs for adverse cardiovascular outcomes were increased for the hypertension only group (HR 1.36, 95% CI 1.22 to 1.52) and were higher still for the comorbid hypertension plus MDD group (HR 1.66, 95% CI 1.45 to 1.9). HRs for the comorbid hypertension plus MDD group were significantly raised compared with hypertension alone (HR 1.22, 95% CI 1.1 to 1.35). Interaction measured using relative excess risk due to interaction (RERI) and likelihood ratios (LRs) were identified at baseline (RERI 0.563, 95% CI 0.189 to 0.938; LR p=0.0116) but not maintained during the follow-up. Limitations: Possible selection bias in UK Biobank and inability to assess for levels of medication adherence. Conclusions: Comorbid hypertension and MDD conferred greater hazard than hypertension alone for adverse cardiovascular outcomes, although evidence of interaction between hypertension and MDD was inconsistent over time. Future cardiovascular risk prediction tools may benefit from the inclusion of questions about prior history of depressive disorders.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Smith, Professor Daniel and Mackay, Professor Daniel and Graham, Dr Nicholas and Cavanagh, Professor Jonathan and Ward, Mr Joey and Padmanabhan, Professor Sandosh and Pell, Professor Jill
Authors: Graham, N. A., Ward, J., Mackay, D., Pell, J., Cavanagh, J., Padmanabhan, S., and Smith, D. J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > Mental Health and Wellbeing
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > Public Health
College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
Journal Name:BMJ Open
Publisher:BMJ Publishing Group
ISSN:2044-6055
ISSN (Online):2044-6055
Published Online:30 September 2019
Copyright Holders:Copyright © Authors (or their employers) 2019
First Published:First published in BMJ Open 9(9):e024433
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
3029570Mental Health Data PathfinderDaniel SmithMedical Research Council (MRC)MC_PC_17217HW - Mental Health and Wellbeing

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