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Clinically significant discrepancies between sleep problems assessed by standard clinical tools and actigraphy
Kjersti Marie Blytt1,2,3, Bjørn Bjorvatn4,5, Bettina Husebo4,6,7
1Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway. kjersti.blytt@uib.no.
Proxy raters underreport sleep disturbances in nursing home patients compared to actigraphy. This highlights the need for better staff education on sleep challenges in this population.
Area of Science:
- Gerontology
- Sleep Medicine
- Clinical Research
Background:
- Sleep disturbances are prevalent in nursing home (NH) patients, impacting their health.
- Accurate identification of sleep issues is crucial for clinical intervention.
- Current clinical tools, like the Cornell Scale for Depression in Dementia (CSDD) and Neuropsychiatric Inventory - Nursing Home version (NPI-NH), are used to assess sleep, but their comparability with objective measures is unclear.
Purpose of the Study:
- To compare the accuracy of sleep disturbance detection between actigraphy and the sleep items of the CSDD and NPI-NH in NH patients.
- To determine the clinical utility and potential limitations of proxy-rated sleep assessments.
Main Methods:
- A cross-sectional study involving 83 NH patients.
- Objective sleep monitoring using actigraphy for seven days.
- Subjective sleep assessment by NH staff using CSDD and NPI-NH sleep items.
- Statistical comparison including McNemar's tests, Cohen's Kappa, and ROC curve analysis.
Main Results:
- Proxy raters significantly underreported sleep disturbances compared to actigraphy.
- NPI-NH identified sleep disturbances in 20.5% of patients.
- CSDD identified sleep disturbances in 18.1% (difficulty falling asleep), 43.4% (multiple awakenings), and 3.6% (early morning awakenings).
- Significant differences (p<0.001) were found between actigraphy and both proxy-rated measures.
Conclusions:
- Proxy-rated sleep assessments using NPI-NH and CSDD may underestimate the true prevalence of sleep disturbances in NH patients.
- Further research is needed to validate the clinical value of these subjective measures.
- Enhanced knowledge and training for NH staff regarding sleep challenges are essential.
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