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February 27, 20260 citations

Counting Zs: Determining the Monitoring Days Needed to Obtain Reliable Sleep Metrics in Older Adults with Mild Cognitive Impairment.

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JCJun Ha ChangXSXinyu SunSCSu Chen

Key Points

  • The study aims to determine the number of monitoring days required for accurate sleep metrics in older adults with mild cognitive impairment.
  • Analyzed actigraphy data from both older adults with mild cognitive impairment and control groups.
  • Compared the number of days needed to obtain reliable sleep metrics between the two groups.
  • At least 9 days of actigraphy data are necessary for older adults with mild cognitive impairment.
  • Only 4 days of data are sufficient for the control group, highlighting the difference.

Abstract

To obtain reliable sleep metrics, at least 9 days of actigraphy data are needed for older adults with MCI, compared to 4 days for controls, suggesting the need for extended monitoring in cognitively impaired individuals.

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Cite This Study

Chang et al. (2026) studied this question.

synapsesocial.com/papers/69a13591ed1d949a99abf953https://doi.org/10.1080/15402002.2026.2635121
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