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56/100

✓ Peer-reviewed alzhub usefulness score 56 out of 100. Brain scans and imaging

Topic: Risk, prevention and care in population studies

Plain-language summary

Objectives To identify sleep disturbances in participants with subtypes of dementia and explore clinical correlates. Design Cross-sectional. Setting Outpatient clinics in western Norway and the Mayo Clinic Study of Aging, Olmsted County, Minnesota. Participants One hundred fifty-one community-dwelling western Norway residents referred for geriatric medicine, geriatric psychiatry or neurology evaluation and 420 participants without dementia from the Mayo Clinic Study of Aging. Measurements Dementia was diagnosed according to Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, criteria. The Mayo Sleep Questionnaire, an interview to detect sleep disturbances, was administered to diagnose probable rapid eye movement (REM) sleep behavior disorder, probable periodic leg movements during sleep, probable restless legs syndrome, probable sleepwalking, probable sleep-related leg cramps, probable obstructive sleep apnea, and excessive daytime sleepiness. Insomnia was assessed using the Neuropsychiatric Inventory, an interview to detect neuropsychiatric symptoms in dementia. Results Seventy-one percent of the participants with dementia and 55.7% of control participants had sleep disturbances (P=.001). Most frequently reported in the mild dementia participants were insomnia (29.9%), probable sleep-related leg cramps (24.1%), excessive daytime sleepiness (22.6%), probable restless legs syndrome (20.7%), and probable REM sleep behavior disorder (18.5%). There were more sleep-related problems reported in participants with Lewy body dementias (LBD) (dementia with Lewy bodies and Parkinson's disease dementia) than in those with Alzheimer's disease (P=.008). Having any sleep disorder correlated with depression (P=.03) and anxiety (P=.02). Conclusion Sleep problems are common in dementia, particularly in subjects with LBD, and are associated with psychiatric symptoms. Further research is needed to understand these associations and identify treatment strategies.

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APA 7th

Rongve, A., Boeve, B. F., & Aarsland, D. (2010). Frequency and correlates of caregiver-reported sleep disturbances in a sample of persons with early dementia. Journal of the American Geriatrics Society. https://doi.org/10.1111/j.1532-5415.2010.02733.x

Vancouver

Rongve A, Boeve BF, Aarsland D. Frequency and correlates of caregiver-reported sleep disturbances in a sample of persons with early dementia. Journal of the American Geriatrics Society. 2010. doi:10.1111/j.1532-5415.2010.02733.x. PMID: 20398116.

BibTeX

@article{rongve2010-20398116,
  author  = {Rongve, A. and Boeve, B. F. and Aarsland, D.},
  title   = {{Frequency and correlates of caregiver-reported sleep disturbances in a sample of persons with early dementia}},
  journal = {Journal of the American Geriatrics Society},
  year    = {2010},
  doi     = {10.1111/j.1532-5415.2010.02733.x},
  pmid    = {20398116},
  url     = {https://doi.org/10.1111/j.1532-5415.2010.02733.x}
}

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How to read this study

Design: this is a cross-sectional study. Everyone is measured once, so it cannot show which came first. Read it as a snapshot of how two things go together at one moment.
Size: the record lists 420 participants. Ask whether that is enough for the question, and who they were.
Effect: the record reports “55.7%; 29.9%; 24.1%”. A statistically significant result can still be small in daily life.

What the evidence grade means here

This page is graded low. alzhub.org assigns the grade automatically from keywords in the abstract, not from reading the paper. Low means the abstract matched neither pattern. It is the default label, and it does not mean the work is poor; many sound lab and imaging papers land here. It can add at most 5 of the 100 points in the study score, and it is a label about design, not a verdict on whether the findings are true.

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Key findings

Results Seventy-one percent of the participants with dementia and 55.7% of control participants had sleep disturbances (P=.001).
Conclusion Sleep problems are common in dementia, particularly in subjects with LBD, and are associated with psychiatric symptoms.

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Study details

Study designcross-sectional
Participants420
Effect size55.7%; 29.9%; 24.1%
Evidence strengthLow

How this study scored 56/100

Published in a peer-reviewed journal, and it is a snapshot of people at one point in time. Scored zero for randomized / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record and institution's track record, so those were left out: it earned 34 of the 61 points we could judge it on, which is 56 out of 100.

Component	Points	Why
Journal tier	7 / 10	Tier 3 — peer-reviewed journal (Journal of the American Geriatrics Society)
Journal's citation record	— / 4	No journal record from OpenAlex — left out of this score
Study design	4 / 12	A snapshot of people at one point in time
Strength of evidence	1 / 5	Rated “low” in our summary
Peer-review validation	10 / 10	Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent	1 / 5	2010 — within 20 year(s) of the newest study here
Sample size	2 / 4	420 participants
Effect reported	2 / 3	Effect reported as a number, without an interval or test
Studied in people	3 / 3	Studied in people (participant count stated)
Randomized / blinded	0 / 2	No randomization or blinding stated — scores zero (not stated in the record — scored 0)
Times cited	— / 7	No citation count (not found in OpenAlex) — left out of this score
Citations per year	— / 5	No citation count or no year — left out of this score
Impact for its field and year	— / 6	No field-weighted citation impact (OpenAlex has none yet) — left out of this score
Cited by studies here	— / 6	Not yet checked against this library's citation graph — left out of this score
Still being cited	— / 4	No yearly citation counts — left out of this score
Senior author's track record	— / 4	Senior author's record not available — left out of this score
Institution's track record	— / 3	No institution listed in OpenAlex — left out of this score
Multicenter collaboration	2 / 3	PubMed indexes it as a multicentre study
Indexed in PubMed	2 / 2	Indexed in PubMed (PMID 20398116)
Free to read	0 / 2	Behind a paywall — scores zero
Points	34 / 61	Scored on 12 of 20 parts. We have no data for the rest, so they are left out: 34 of the 61 points we could judge it on is 56 out of 100.
Total	56 / 100	—

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