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Relationship between Sleep Disorders and Health Related Quality of Life—Results from the Georgia SOMNUS Study

Author

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  • Nato Darchia

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia
    These authors contributed equally to this paper.)

  • Nikoloz Oniani

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Irine Sakhelashvili

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Mariam Supatashvili

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Tamar Basishvili

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Marine Eliozishvili

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Lia Maisuradze

    (Research Center—T.Oniani Laboratory of Sleep–wakefulness Study, Ilia State University, 0162 Tbilisi, Georgia)

  • Katerina Cervena

    (Sleep Medicine Center, Division of Pneumology, University Hospital of Geneva, Chêne-Bourg, 1225 Geneva, Switzerland
    Sleep Medicine Center CENAS, Les Acacias, 1227 Geneva, Switzerland
    These authors contributed equally to this paper.)

Abstract

The extent to which sleep disorders are associated with impairment of health-related quality of life (HRQoL) is poorly described in the developing world. We investigated the prevalence and severity of various sleep disorders and their associations with HRQoL in an urban Georgian population. 395 volunteers (20–60 years) completed Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, STOP-Bang questionnaire, Insomnia Severity Index, Beck Depression Inventory-Short Form, and Short Form Health Survey (SF-12). Socio-demographic data and body mass index (BMI) were obtained. The prevalence of sleep disorders and their association with HRQoL was considerable. All SF-12 components and physical and mental component summaries (PCS, MCS) were significantly lower in poor sleepers, subjects with daytime sleepiness, apnea risk, or insomnia. Insomnia and apnea severity were also associated with lower scores on most SF-12 dimensions. The effect of insomnia severity was more pronounced on MCS, while apnea severity—on PCS. Hierarchical analyses showed that after controlling for potential confounding factors (demographics, depression, BMI), sleep quality significantly increased model’s predictive power with an R 2 change (ΔR 2 ) by 3.5% for PCS (adjusted R 2 = 0.27) and by 2.9% for MCS (adjusted R 2 = 0.48); for the other SF-12 components ΔR 2 ranged between 1.4% and 4.6%. ESS, STOP-Bang, ISI scores, all exerted clear effects on PCS and MCS in an individual regression models. Our results confirm and extend the findings of studies from Western societies and strongly support the importance of sleep for HRQoL. Elaboration of intervention programs designed to strengthen sleep-related health care and thereof HRQoL is especially important in the developing world.

Suggested Citation

  • Nato Darchia & Nikoloz Oniani & Irine Sakhelashvili & Mariam Supatashvili & Tamar Basishvili & Marine Eliozishvili & Lia Maisuradze & Katerina Cervena, 2018. "Relationship between Sleep Disorders and Health Related Quality of Life—Results from the Georgia SOMNUS Study," IJERPH, MDPI, vol. 15(8), pages 1-15, July.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:8:p:1588-:d:160143
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