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  • Title: Association of sleep characteristics with suicidal ideation and suicide attempt among adults aged 50 and older with depressive symptoms in low- and middle-income countries.
    Author: Owusu JT, Doty SB, Adjaye-Gbewonyo D, Bass JK, Wilcox HC, Gallo JJ, Spira AP.
    Journal: Sleep Health; 2020 Feb; 6(1):92-99. PubMed ID: 31757754.
    Abstract:
    OBJECTIVES: Investigate the association of sleep characteristics with suicidal ideation and suicide attempt among middle-aged and older adults with depressive symptoms in five low- and middle-income countries (LMICs). DESIGN: Cross-sectional. SETTING: China, Ghana, India, Russia, and South Africa. PARTICIPANTS: Adults aged ≥50 years with depressive symptoms from the World Health Organization (WHO) Study on Global AGEing and Adult Health (n=2,040). MEASUREMENTS: Predictors were self-reported average sleep duration for the past 2 nights (<7 hours (shorter), 7 to <9 hours (reference), ≥9 hours (longer)), sleep quality for the past 2 nights (moderate/good/very good [both nights], poor/very poor [≥1 night]), past-month insomnia symptoms (none/mild, moderate, severe/extreme), and past-day daytime sleepiness. Outcomes were past-year suicidal ideation and suicide attempt. Analyses were adjusted for age, sex, household wealth, marital status, self-rated health, cognitive performance, number of depressive symptoms, and country of residence. RESULTS: Participants with poor/very poor sleep quality ≥1 night had greater odds of suicidal ideation (vs. moderate/good/very good sleep quality both nights). Participants with moderate and severe/extreme insomnia symptoms had greater odds of suicidal ideation and suicide attempt (vs. none/mild insomnia symptoms). In moderation analyses, greater insomnia symptoms were associated with higher odds of suicidal ideation among women only and those aged 60-60 years and ≥80 years only. CONCLUSIONS: Among middle-aged and older adults with depressive symptoms in LMICs, sleep characteristics are markers of-and potential contributors to-suicidal ideation and suicide attempt, and there was evidence of moderation by age and sex. Interventions aimed at preventing suicide-related outcomes in these populations should consider the role of sleep.
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