Evidence map›Paper›PMID 24497665›Full record

ArticleSleep2014

Restless legs syndrome: an early clinical feature of Parkinson disease in men.

Janice C Wong, Yanping Li, Michael A Schwarzschild, Alberto Ascherio, Xiang Gao

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
7.5field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 96 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Sleep disorders and sleep behaviors as predictors of neurodegenerative diseases.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  6. Lifestyle medicine in Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2026
    Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Longitudinal Studies of Sleep Disturbances in Parkinson's Disease.Current neurology and neuroscience reports · 2022
    Review
  14. Article
  15. Restless Chest Syndrome: A Rare Variant of Restless Legs Syndrome.European journal of case reports in internal medicine · 2022
    Article
  16. Article
  17. Article
  18. Article
  19. Lack of Causal Effects or Genetic Correlation between Restless Legs Syndrome and Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2021
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Janice C WongDepartment of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
Yanping LiDepartment of Nutrition, Harvard School of Public Health, Boston, MA.
Michael A SchwarzschildDepartment of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA.
Alberto AscherioDepartment of Nutrition, Harvard School of Public Health, Boston, MA ; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
Xiang GaoDepartment of Nutrition, Harvard School of Public Health, Boston, MA ; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA ; School of Public Health, Peking Union Medical College, Beijing, China.
Harvard University · USBrigham and Women's Hospital · USChinese Academy of Medical Sciences & Peking Union Medical College · CN

Funding

Validity of Diet and Activity Measures in WomenP01CA055075 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI WILLETT, WALTER C. · 1991 to 2009
$41.8M
Urate as a Predictor of Parkinson's Disease Risk and ProgressionR01NS061858 · NINDS · HARVARD SCHOOL OF PUBLIC HEALTH · PI ASCHERIO, ALBERTO · 2009 to 2013
$3.4M
NSAIDs, inflammation and Parkinson's diseaseR01NS048517 · NINDS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI ASCHERIO, ALBERTO · 2005 to 2009
$2.1M
NCI NIH HHS P01 CA055075NINDS NIH HHS R01 NS048517NINDS NIH HHS R01 NS061858
6 · The paper itself

Abstract

STUDY

objectiveThe association between restless legs syndrome (RLS) and Parkinson disease has been extensively studied, but the temporal relationship between the two remains unclear. We thus conduct the first prospective study to examine the risk of developing Parkinson disease in RLS.

designProspective study from 2002-2010.

settingUnited States.

participantsThere were 22,999 US male health professionals age 40-75 y enrolled in the Health Professionals Follow-up Study without Parkinson disease, arthritis, or diabetes mellitus at baseline. MEASUREMENT AND

resultsRLS was assessed in 2002 using a set of standardized questions recommended by the International RLS Study Group. Incident Parkinson disease was identified by biennial questionnaires and then confirmed by review of participants' medical records by a movement disorder specialist. We documented 200 incident Parkinson disease cases during 8 y of follow-up. Compared to men without RLS, men with RLS symptoms who had symptoms greater than 15 times/mo had higher risk of Parkinson disease development (adjusted relative risk = 1.47; 95% confidence interval: 0.59, 3.65; P = 0.41). This was statistically significant only for cases diagnosed within 4 y of follow-up (adjusted relative risk = 2.77; 95% confidence interval: 1.08, 7.11; P = 0.03).

conclusionSevere restless legs syndrome may be an early feature of Parkinson disease.

Indexed as

AdultAgedAged, 80 and overEarly DiagnosisFollow-Up StudiesHealth PersonnelHumansMaleMiddle AgedParkinson DiseaseProspective StudiesRestless Legs SyndromeRisk FactorsSurveys and QuestionnairesUnited StatesParkinson diseaseprospective studyRestless legs syndrome

Identifiers

PMID24497665
PMCPMC3900617
OpenAlexW2106925276

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.