Sleep Disturbance in Older Adults With or Without Mild Cognitive Impairment and Its Associated Factors Residing in Rural Area, China

Abstract

Aims: To evaluate the prevalence of sleep disturbance in older adults with or without mild cognitive impairment (MCI) and associated factors among residents in rural central China. Methods: A cross-sectional survey was conducted in adults in rural areas of the Hunan province aged≥60 years. Study participants (N = 1213) included 479 individuals meeting the criteria for MCI and 734 with normal cognitive abilities. The participants completed the Athens Insomnia Scale, Stress Resilience Quotient Scale, Affect Balance Scale and Activities of Daily Living (ADL) Scale. Chi-square test, Wilcoxon rank sum analyses and multiple logistic regression were used in this study. Results: A total of 60.33% of participants with MCI demonstrated sleep disturbance (60.33%, 95% CI: 0.559-0.649), which was significantly higher than in the non-MCI group (43.73%, 95% CI: 0.759-0.838). Multiple logistic regression conducted separately in the populations of older adults with or without MCI showed that age, drinking habits, affect balance and activities of daily life were correlates of self-reported sleep disturbance in rural older adults with MCI ( B = −5.469), whereas age, ADL, living arrangement and resilience were the main influencing factors in older adults without MCI ( B = 2.991). Conclusion: Sleep disturbance is more common in older adults with MCI than without MCI in rural areas of China. The factors influencing sleep disturbances vary between older adults with or without MCI, with age and ADL representing common factors influencing sleep disturbance in both groups. Interventions focusing on the age, drinking habits, affect balance and ADL may improve sleep quality in MCI older adults.

Urban–rural disparities in mild cognitive impairment and its functional subtypes among community-dwelling older residents in central China

“…The current study reports the prevalences of MCI and its functional subtypes in multi-regional rural and urban communities of individuals aged ≥65 years in Hubei Province in central China; this is the first such report in the English literature to date. Our findings suggest that the prevalence of MCI among urban residents in central China was consistent with that in other metropolises in China, such as Shanghai, but the prevalence in rural areas was twice that in urban areas in our study, which resulted in an overall higher MCI prevalence (27.8%) than the Shanghai Aging Study (SAS) (20.1%) 35 and other Chinese findings in 2018 (14.71%). 13 Interestingly, the prevalence of aMCI in urban areas was higher than that in SAS but that of naMCI was lower.…”

“…We found that the prevalence of MCI in rural areas is twice that in urban areas, although in urban areas the prevalence was close to those reported in a previous epidemiology study in more developed cities, such as Shanghai. 35 As basic medical services are relatively less established and disease diagnosis is delayed in rural areas, our study suggests that the focus of appropriate programmes on dementia prevention and treatment should be shifted to rural populations. In addition, Hubei is an economically underdeveloped area in central China, and our samples had relatively lower educational levels.…”

Sleep Quality and Aging: A Systematic Review on Healthy Older People, Mild Cognitive Impairment and Alzheimer’s Disease

“…Four studies used the “Mini-Mental State Examination—MMSE” [ 121 ] as a diagnostic criterion, with different cut-offs: MMSE lower than 24 [ 91 ], MMSE lower than 20 [ 78 ], MMSE lower than 21 [ 80 ], MMSE lower than 17 [ 109 ]. Seven studies adopted other criteria [ 122 , 123 , 124 , 125 ], for example, Portet et al criteria [ 63 , 65 , 75 , 88 , 95 , 98 , 107 , 109 , 122 ].…”

Fruit and Vegetable Intakes and Sleep in Linkage With Cognition Among Older Adults in China

“…The excessive long sleep duration [96] and the low frequency of FVI [98] have been a concern among rural older adults in China due to their disadvantaged economic/educational statuses, rural lifestyle, and low access to social security and healthcare [99,100]. It is thus possible that the adequate sleep duration and the high frequency of FVI could yield greater bene ts to cognitive impairment in rural older adults [50,101,102,103]. Consequently, rural older adults are more likely to be sensitive to the improvement of the nutritional status, and the protective effect of FVI on cognitive functioning therefore may be more pronounced for rural adults compared with urban older adults.…”

“…China is a country that has the largest population of older adults in the contemporary world, with an estimated prevalence of dementia of approximately 6.6% in 2015-2018 among individuals aged 65 years and older [43,44,45]. With the rapid population aging and socio-economic transformation, growing prevalence of unhealthy diets [46,47,48], and sleep disturbance [49,50,51], there is a need to examine how the frequency of FVI and sleep patterns affect cognitive function among older adults in China.…”