The Relationship between Depression and Asthma: A Meta-Analysis of Prospective Studies

Yong-hua Gao, Hua-si Zhao, Fu-rui Zhang, Yang Gao, Pamela Shen, Rong-chang Chen and Guo-jun Zhang

PLOS ONE, 2015, vol. 10, issue 7, 1-12

Abstract: Background: Previous studies have suggested that asthmatic patients often have comorbid depression; however, temporal associations remain unclear. Objectives: To determine whether depression predicts asthma and, conversely, whether asthma predicts depression. Methods: A literature search was conducted without language restrictions using Pubmed, Embase, Cochrane and PsycINFO for studies published before January, 2015. Papers referenced by the obtained articles were also reviewed. Only comparative prospective studies with reported risk estimates of the association between depression and asthma were included. In order to investigate whether one of these conditions was predictive of the other, studies were excluded if enrolled participants had pre-existing depression or asthma. A random-effects model was used to calculate the pooled risk estimates for two outcomes: depression predicting asthma and asthma predicting depression. Results: Seven citations, derived from 8 cohort studies, met our inclusion criteria. Of these, six studies reported that depression predicted incident adult-onset asthma, including 83684 participants and 2334 incident cases followed for 8 to 20 years. Conversely, two studies reported that asthma predicted incident depression. These studies involved 25566 participants and 2655 incident cases followed for 10 and 20 years, respectively. The pooled adjusted relative risks (RRs) of acquiring asthma associated with baseline depression was 1.43 (95% CI, 1.28–1.61) (P

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0132424

DOI: 10.1371/journal.pone.0132424

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