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Depression second leading cause of global disability burden

2013-11-06
(Press-News.org) Contact information: Fiona Godwin
medicinepress@plos.org
Public Library of Science
Depression second leading cause of global disability burden A study published this week in PLOS Medicine reports the most recent and comprehensive estimates on how much death and disability is attributable to depression, both world-wide and in individual countries and regions.

Rates and ranking among all causes of disability varied by country and by region. The rates are highest in Afghanistan and lowest in Japan, and depression ranks first in Central America and Central and Southeast Asia. Disability from depression affects mostly people in their working years, and women more than men.

To arrive at the estimates, the authors of the study, led by Alize Ferrari from the University of Queensland and the Queensland Centre for Mental Health Research, compiled relevant information from all published research studies on major depressive disorder (MDD, also called clinical depression), and dysthymia, a milder chronic form of depression.

They then used mathematical tools to estimate a standard measure of disease burden: "disability-adjusted life years", or DALYs, calculated by adding together "years lived with a disability", or YLDs and "years lost because of disease-specific premature death" or YLLs. For some countries and regions, especially low-income countries, few studies had been published, and the researchers had to substitute actual numbers with reasonable estimates to calculate YLDs and DALYs.

When compared to other diseases and injuries, MDD ranked as the second leading cause of global disability (or YLDs) and eleventh leading cause of global burden (or DALYs) in 2010. However, MDD also contributes to mortality for a number of other conditions. When the researchers added DALYs attributable to MDD for two of them, namely suicide and ischemic heart disease, MDD ranked as the eighth leading cause of global burden.

Their results, the researchers say "not only highlight the fact that depressive disorders are a global health priority but also that it is important to understand variations in burden by disorder, country, region, age, sex, and year when setting global health objectives."

### Funding: AJF, FJC, HAW are affiliated with the Queensland Centre for Mental Health Research, which obtains funding from the Queensland Department of Health. REN, GF, CJLM, and TV received funding for the Global Burden of Disease project from the Bill & Melinda Gates Foundation. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Competing Interests: The authors declare that no competing interests exist.

Citation: Ferrari AJ, Charlson FJ, Norman RE, Patten SB, Freedman G, et al. (2013) Burden of Depressive Disorders by Country, Sex, Age, and Year: Findings from the Global Burden of Disease Study 2010. PLoS Med 10(11): e1001547. doi:10.1371/journal.pmed.1001547

IN YOUR COVERAGE PLEASE USE THIS URL TO PROVIDE ACCESS TO THE FREELY AVAILABLE PAPER:

http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001547

Contact: Alize J Ferrari
University of Queensland
AUSTRALIA
61732718687
alize_ferrari@qcmhr.uq.edu.au


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[Press-News.org] Depression second leading cause of global disability burden