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Relationships of persistent depressive symptoms with subsequent lung function trajectory and respiratory disease
Xiaobo Han1, Chenglong Li2, Yidan Zhu2
1College of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China; Chinese PLA Medical School, Beijing, China.
Background:
Little is known about the longitudinal association between persistent depressive symptoms and future lung health in the general population.
Method:
4860 middle-aged and older participants with repeated measurements of depressive symptoms at wave 1 (2002-2003) and wave 2 (2004-2005) and at least two measurements of lung function (waves 2-6, 2004-2013) from the English Longitudinal Study of Ageing, were included in this study. The Center for Epidemiologic Studies Depression Scale (CESD) was used to evaluate depressive symptoms. Participants who had depressive symptoms in both waves 1 and 2 were considered to have persistent depressive symptoms. Linear mixed models were applied to assess longitudinal associations. Cox regression models were fitted to analyze respiratory disease mortality.
Results:
During an 8-year follow-up, we found that women with persistent depressive symptoms suffered accelerated declines in forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC), percentage of the FEV1 predicted, percentage of the FVC predicted, and peak expiratory flow, compared with women without depressive symptoms at baseline. Likewise, an elevated risk of respiratory disease mortality (HR: 6.02, 95% CI: 2.30 to 15.79) was observed in women with persistent depressive symptoms compared with women without depressive symptoms. We also observed a dose-response relationship between cumulative depressive symptom scores and subsequent lung health outcomes in women. However, no such association was observed in men.
Conclusion:
Long-term depressive symptoms might predict an accelerated decline of lung function and higher mortality from respiratory disease among women but not among men over an 8-year follow-up. Further studies are needed to verify our findings.
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