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  • Title: The mediation effect of depression and alcohol use disorders on the association between post-traumatic stress disorder and obstructive sleep apnea risk in 51,149 Korean firefighters: PTSD and OSA in Korean firefighters.
    Author: Kim JI, Park H, Min B, Oh S, Lee JH, Kim JH.
    Journal: J Affect Disord; 2021 Sep 01; 292():189-196. PubMed ID: 34126310.
    Abstract:
    BACKGROUND: Post-traumatic stress disorder (PTSD) is shown to be linked to a higher risk of obstructive sleep apnea (OSA). Firefighters are at high risk for PTSD given the increased exposure to trauma.  However, the relationship between PTSD and OSA remains unclear in firefighters. Moreover, alcohol use disorders (AUDs) and depression - also common in firefighters - show a high comorbidity rate with both PTSD and OSA. The purpose of this study was to investigate the association of PTSD, depression, and AUDs with OSA in a national sample of Korean firefighters. METHODS: A total of 51,149 Korean firefighters completed self-reported questionnaires, assessing the severity of PTSD, OSA, depression, and alcohol misuse. Multivariable logistic regression and mediation analyses were performed. RESULTS: PTSD, depression, and AUDs were significantly associated with OSA. In the mediation analyses, PTSD had both direct and indirect effects mediated by depression and AUDs on OSA. Depression had both direct and indirect effects on OSA, with the latter mediated by AUDs. LIMITATIONS: First, high-risk of OSA was measured using the Berlin Questionnaire. Second, other medical comorbidities or mediation use were not considered. Third, self-report questionnaires were used for assessment, which are prone to subjectivity and recollection bias. Finally, the majority of the study population were male and all Korean, limiting generalizability. CONCLUSIONS: PTSD had both direct and indirect effects on OSA, mediated by depression and AUDs. In patients with both PTSD and OSA, depression and AUD symptoms should be screened routinely.
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