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January 29, 2019; 92 (5) Article

Risk factors for possible REM sleep behavior disorder

A CLSA population-based cohort study

View ORCID ProfileChun Yao, Seyed-Mohammad Fereshtehnejad, Mark R. Keezer, Christina Wolfson, Amélie Pelletier, Ronald B. Postuma
First published December 26, 2018, DOI: https://doi.org/10.1212/WNL.0000000000006849
Chun Yao
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Seyed-Mohammad Fereshtehnejad
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Mark R. Keezer
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Christina Wolfson
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Amélie Pelletier
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Ronald B. Postuma
From the Integrated Program in Neuroscience (C.Y.), Department of Neurology and Neurosurgery (S.-M.F., R.B.P.), Department of Epidemiology and Biostatistics and Occupational Health (C.W.), and Department of Medicine (C.W., A.P.), McGill University; Centre de Recherche du Centre hospitalier de l'Université de Montréal (M.R.K.); and Research Institute of the McGill University Health Centre (C.W., A.P.), Montreal, Quebec, Canada.
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Citation
Risk factors for possible REM sleep behavior disorder
A CLSA population-based cohort study
Chun Yao, Seyed-Mohammad Fereshtehnejad, Mark R. Keezer, Christina Wolfson, Amélie Pelletier, Ronald B. Postuma
Neurology Jan 2019, 92 (5) e475-e485; DOI: 10.1212/WNL.0000000000006849

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Abstract

Objective To assess sociodemographic, socioeconomic, and clinical correlates of idiopathic REM sleep behavior disorder (RBD) in a 30,097-person national cohort.

Methods Participants 45 to 85 years of age in Canada were collected as part of the Canadian Longitudinal Study on Aging. Possible RBD (pRBD) was screened with the REM Sleep Behavior Disorder Single-Question Screen, a questionnaire with 94% specificity and 87% sensitivity. To improve diagnostic accuracy, those screening positive for apnea or non-REM parasomnia (young-onset pRBD) and those self-reporting dementia or Parkinson disease were excluded. A series of sociodemographic, lifestyle, and mental health variables were analyzed cross-sectionally. Potential correlates were assessed via multivariable logistic regression.

Results Of 30,097 participants, 958 (3.2%) were identified as having pRBD. Male sex (odds ratio [OR] 2.09, 95% confidence interval [CI] 1.78–2.44) and lower education (OR 0.95, 95% CI 0.92–0.98) were associated with pRBD. Participants with pRBD had smoked more (pack-years OR 1.01, 95% CI 1.00–1.01) and were more likely to be moderate to heavy drinkers (OR 1.25, 95% CI 1.04–1.51). There was a strong association between pRBD and self-reported antidepressant treatment for depression (OR 2.77, 95% CI 2.23–3.45), psychological distress (OR 1.61, 95% CI 1.44–1.80), mental illness (OR 2.09, 95% CI 1.75–2.49), and posttraumatic stress disorder (OR 2.68, 95% CI 1.97–3.65).

Conclusions Our study replicated previous reported associations between pRBD and smoking, low education, and male sex and found previously unreported links with alcohol use and psychological distress. Risk factors for pRBD differ from those previously defined for neurodegenerative synucleinopathies.

Glossary

CI=
confidence interval;
CLSA=
Canadian Longitudinal Study on Aging;
DLB=
dementia with Lewy bodies;
NREM=
non-REM;
OR=
odds ratio;
PD=
Parkinson disease;
PLMS=
periodic leg movements in sleep;
pRBD=
possible REM sleep behavior disorder;
PSG=
polysomnogram;
PTSD=
posttraumatic stress disorder;
RBD=
REM sleep behavior disorder;
RBD1Q=
REM Sleep Behavior Disorder Single-Question Screen;
RLS=
restless leg syndrome

Footnotes

  • Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.

  • Received January 11, 2018.
  • Accepted in final form October 1, 2018.
  • © 2018 American Academy of Neurology
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