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Excessive daytime sleepiness and sudden-onset sleep in Parkinson disease: a survey by the Canadian Movement Disorders Group
Hobson DE, Lang AE, Martin WR, Razmy A, Rivest J, Fleming J.. JAMA, 2002-01-01
Topic: Brain proteins, microglia and lab models
Results Excessive daytime sleepiness was present overall in 327 (51%) of the 638 patients and in 213 (51%) of the 420 drivers. The 2 risk factors associated with falling asleep at the wheel were the Epworth Sleepiness Scale score (odds ratio [OR], 1.14; 95% confidence interval [CI], 1.06-1.24) and the Inappropriate Sleep Composite Score (OR, 2.54; 95% CI, 1.76-3.66).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Hobson, D. E., Lang, A. E., Martin, W. R., Razmy, A., Rivest, J., & Fleming, J. (2002). Excessive daytime sleepiness and sudden-onset sleep in Parkinson disease: a survey by the Canadian Movement Disorders Group. JAMA. https://doi.org/10.1001/jama.287.4.455
Vancouver
Hobson DE, Lang AE, Martin WR, Razmy A, Rivest J, Fleming J. Excessive daytime sleepiness and sudden-onset sleep in Parkinson disease: a survey by the Canadian Movement Disorders Group. JAMA. 2002. doi:10.1001/jama.287.4.455. PMID: 11798367.
BibTeX
@article{hobson2002-11798367,
author = {Hobson, D. E. and Lang, A. E. and Martin, W. R. and Razmy, A. and Rivest, J. and Fleming, J.},
title = {{Excessive daytime sleepiness and sudden-onset sleep in Parkinson disease: a survey by the Canadian Movement Disorders Group}},
journal = {JAMA},
year = {2002},
doi = {10.1001/jama.287.4.455},
pmid = {11798367},
url = {https://doi.org/10.1001/jama.287.4.455}
}
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Key findings
- Results Excessive daytime sleepiness was present overall in 327 (51%) of the 638 patients and in 213 (51%) of the 420 drivers.
- The 2 risk factors associated with falling asleep at the wheel were the Epworth Sleepiness Scale score (odds ratio [OR], 1.14; 95% confidence interval [CI], 1.06-1.24) and the Inappropriate Sleep Composite Score (OR, 2.54; 95% CI, 1.76-3.66).
Why it matters
This survey found excessive daytime sleepiness in 51% of Parkinson's disease patients and identified sleepiness scale scores as risk factors for falling asleep at the wheel. It concerns sleepiness and driving safety in Parkinson's disease and does not address treating, curing, or preventing Alzheimer's disease.
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Study details
- Participants638
- Effect size3.8%; 0.7%
- Evidence strengthLow
How this study scored 55/100
Published in a top-tier journal. Scored zero for study design and randomized / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 10 / 10 | Tier 1 — top-tier general journal (JAMA) |
| Journal's citation record | 4 / 4 | JAMA: journal h-index 1,011 (OpenAlex, 2026-10-29) |
| Study design | 0 / 12 | No study design recorded — scores zero, not guessed (not stated in the record — scored 0) |
| 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 | 2002 — older than 20 years, still counted |
| Sample size | 2 / 4 | 638 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 | 6 / 7 | Cited 553 times (OpenAlex, 2026-10-10) |
| Citations per year | 4 / 5 | 21.3 citations a year over 26 year(s) since 2002 |
| Impact for its field and year | 5 / 6 | Cited 21.0× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 2 / 6 | Cited by 7 other studies in this library |
| Still being cited | 1 / 4 | Cited 10 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 2 / 4 | Last-listed author Jonathan A.E. Fleming: h-index 20 (OpenAlex, whole career) |
| Institution's track record | 0 / 3 | University of Manitoba: institution h-index 666 (OpenAlex) |
| Multicenter collaboration | 0 / 3 | OpenAlex lists 1 institution(s) in 1 country — scores zero (affiliation lists can be incomplete) |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 11798367) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Total | 55 / 100 | — |
What each of these 20 components measures, and what this score is not →
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