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Basic Science and Pathogenesis.

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Summary
This summary is machine-generated.

Self-reported sleep quality did not correlate with memory complaints in Kenyan adults, suggesting potential reporter bias in dementia patients. Objective sleep measures are needed to understand dementia risk in African populations.

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Area of Science:

  • Neuroscience and Gerontology
  • Sleep Medicine
  • Global Health

Background:

  • Growing evidence links sleep disturbances to Alzheimer's disease (AD), with short sleep impairing memory and long sleep associated with neuroinflammation.
  • Sleep health remains understudied in African populations, limiting understanding of its role in dementia risk.
  • This study addresses the gap by examining subjective sleep quality and memory complaints in the context of dementia in Kenya.

Purpose of the Study:

  • To investigate the relationship between self-reported sleep quality and memory complaints in a Kenyan population.
  • To highlight the implications of subjective sleep assessments for dementia risk in low- and middle-income countries (LMICs).
  • To compare sleep quality and memory complaints across dementia cases, cognitively unimpaired controls, and oncology patients.

Main Methods:

  • Included 263 participants from Kenya (mean age 54.97, 60.1% female) across four groups: dementia cases, AD-Detect controls, BRK controls, and oncology patients.
  • Assessed self-reported sleep quality using the 6-item RU-SATED questionnaire (scoring regularity, uninterrupted sleep, satisfaction, alertness, timing, efficiency, duration).
  • Employed logistic regression to analyze the relationship between memory complaints and predictors including RU-SATED score, age, sex, education, and study group.

Main Results:

  • Dementia cases reported the highest memory complaints (90.6%), yet surprisingly had the highest mean RU-SATED sleep quality score (9.03).
  • No significant correlation was found between self-reported sleep quality and memory complaints across all groups.
  • Age was a strong predictor of memory complaints (OR=1.07, p<0.001), with each year increasing likelihood by 7%; males were less likely to report complaints (OR=0.44, p=0.005).

Conclusions:

  • Preliminary findings suggest potential reporter bias in dementia patients regarding memory impairments, necessitating objective sleep data.
  • Reliance on self-reported sleep assessments in LMICs like Kenya may introduce inaccuracies, impacting dementia risk assessment.
  • Future research should utilize objective measures (actigraphy, polysomnography) and informant verification to enhance reliability for dementia risk reduction strategies.