4.6 Article

Sex-specific associations between daytime sleepiness, chronic diseases and mortality in obstructive sleep apnea

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FRONTIERS IN NEUROSCIENCE
卷 17, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fnins.2023.1210206

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sleepiness; obstructive sleep apnea; mortality; sex differences; chronic disease

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The study aimed to assess the associations between excessive daytime sleepiness (EDS) and chronic diseases and mortality in men and women with obstructive sleep apnea (OSA). The results showed that EDS was associated with a lower risk of hypertension in male OSA patients and a higher risk of diabetes mellitus in both OSA men and women. In women, EDS was also independently associated with a higher risk of premature death.
ObjectiveExcessive daytime sleepiness (EDS) is common in obstructive sleep apnea (OSA) and has been linked to adverse outcomes, albeit inconsistently. Furthermore, whether the prognostic impact of EDS differs as a function of sex is unclear. We aimed to assess the associations between EDS and chronic diseases and mortality in men and women with OSA. MethodsNewly-diagnosed adult OSA patients who underwent sleep evaluation at Mayo Clinic between November 2009 and April 2017 and completed the Epworth Sleepiness Scale (ESS) for assessment of perceived sleepiness (N = 14,823) were included. Multivariable-adjusted regression models were used to investigate the relationships between sleepiness, with ESS modeled as a binary (ESS > 10) and as a continuous variable, and chronic diseases and all-cause mortality. ResultsIn cross-sectional analysis, ESS > 10 was independently associated with lower risk of hypertension in male OSA patients (odds ratio [OR], 95% confidence interval [CI]: 0.76, 0.69-0.83) and with higher risk of diabetes mellitus in both OSA men (OR, 1.17, 95% CI 1.05-1.31) and women (OR 1.26, 95% CI 1.10-1.45). Sex-specific curvilinear relations between ESS score and depression and cancer were noted. After a median 6.2 (4.5-8.1) years of follow-up, the hazard ratio for all-cause death in OSA women with ESS > 10 compared to those with ESS & LE; 10 was 1.24 (95% CI 1.05-1.47), after adjusting for demographics, sleep characteristics and comorbidities at baseline. In men, sleepiness was not associated with mortality. ConclusionThe implications of EDS for morbidity and mortality risk in OSA are sex-dependent, with hypersomnolence being independently associated with greater vulnerability to premature death only in female patients. Efforts to mitigate mortality risk and restore daytime vigilance in women with OSA should be prioritized.

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