1. Sleep problems and mild cognitive impairment among adults aged ≥50 years from low- and middle-income countries
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Yvonne Barnett, Christina Carmichael, Guillermo F. López Sánchez, Pinar Soysal, Ai Koyanagi, Louis Jacob, Damiano Pizzol, Nicola Veronese, Lee Smith, Hans Oh, Mark A. Tully, Laurie T. Butler, Jae Il Shin, SOYSAL, PINAR, Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), National Institute on Aging, NIA: OGHA 04034785, R01-AG034479, R21-AG034263, Y1-AG-1005-01, YA1323-08-CN-0020, This paper uses data from WHO's Study on Global Ageing and Adult Health (SAGE). SAGE is supported by the U.S. National Institute on Aging through Interagency Agreements OGHA 04034785, YA1323-08-CN-0020, Y1-AG-1005-01 and through research grants R01-AG034479 and R21-AG034263 ., Smith, L., Shin, J.I., Jacob, L., Carmichael, C., López Sánchez, G.F., Oh, H., Butler, L.T., Barnett, Y., Pizzol, D., Tully, M.A., Soysal, P., Veronese, N., and Koyanagi, A.
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Male ,Aging ,Low- and middle-income countries ,[SDV]Life Sciences [q-bio] ,Middle-aged adults ,Psychological intervention ,Sleep problems ,Logistic regression ,Biochemistry ,0302 clinical medicine ,Endocrinology ,Prevalence ,Mild cognitive impairment ,Medicine ,030212 general & internal medicine ,Cognitive impairment ,Morning ,Older adults ,Aged, 80 and over ,Middle Aged ,Sleep in non-human animals ,3. Good health ,Female ,Sleep Wake Disorders ,Dementia ,Odds ,03 medical and health sciences ,mental disorders ,Genetics ,Humans ,Cognitive Dysfunction ,Developing Countries ,Molecular Biology ,Aged ,business.industry ,Cell Biology ,medicine.disease ,Cross-Sectional Studies ,Ageing ,Smith L., Shin J. I. , Jacob L., Carmichael C., López Sánchez G. F. , Oh H., Butler L. T. , Barnett Y., Pizzol D., Tully M. A. , et al., -Sleep problems and mild cognitive impairment among adults aged ≥50 years from low- and middle-income countries.-, Experimental gerontology, ss.111513, 2021 ,Mild cognitive impairment, Dementia, Sleep problems, Low- and middle-income countries, Middle-aged adults, Older adults ,business ,030217 neurology & neurosurgery ,Demography - Abstract
Background-\ud \ud The limited available literature suggests that sleep problems are linked to an increased risk of mild cognitive impairment (MCI). However, this association has been little studied to date in low-income settings.\ud \ud Objective-\ud \ud To investigate the association between sleep problems and MCI in a large sample of adults from six low-and middle-income countries (LMICs).\ud \ud Design-\ud \ud Cross-sectional.\ud \ud Setting-\ud \ud Study on Global Ageing and Adult Health (SAGE).\ud \ud Subjects-\ud \ud 32,715 individuals aged ≥50 years with preservation in functional abilities [age range 50–114 years; 51.7% females].\ud \ud Methods-\ud \ud MCI was defined using the National Institute on Aging-Alzheimer's Association criteria. Sleep problems were assessed by the question “Overall in the last 30 days, how much of a problem did you have with sleeping, such as falling asleep, waking up frequently during the night or waking up too early in the morning?” and categorized as “None”, “Mild”, “Moderate”, “Severe/Extreme”. Multivariable logistic regression analysis and meta-analysis were conducted.\ud \ud Results-\ud \ud Compared to no sleep problems, mild, moderate, and severe/extreme sleep problems were associated with significant 1.40, 1.83, and 2.69 times higher odds for MCI with similar associations being observed between age groups and sex. Severe/extreme sleep problems were positively associated with MCI (i.e., OR > 1) in the six countries studied with the overall estimate being OR = 1.80 (95% CI = 1.50–2.16), and a low level of between-country heterogeneity was observed (I2 = 28.2%).\ud \ud Conclusions-\ud \ud Sleep problems were associated with higher odds for MCI. Interventions to improve sleep quality among middle-aged and older adults in LMICs may be an effective strategy in reducing risk of MCI and dementia.
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- 2021