Utility of the REM sleep behavior disorder screening questionnaire (RBDSQ) in Parkinson's disease patients

Sleep Med. 2011 Aug;12(7):711-3. doi: 10.1016/j.sleep.2011.01.015. Epub 2011 Jun 22.


Objective: We evaluated the usefulness of the REM sleep behavior disorder (RBD) screening questionnaire (RBDSQ) among patients with Parkinson's disease (PD).

Methods: Forty-five patients with PD were evaluated (22 male and 23 female, 72.9±9.1 years old). After patients completed the RBDSQ, we conducted interviews regarding RBD symptoms and performed polysomnographic examinations on the subjects. We then compared RBDSQ scores among the following groups: PD with RBD (n=19), PD without RBD (n=26), and idiopathic RBD (n=31, 22 male and 9 female, 67.8±6.5 years old), and estimated the cut-off score for an RBD diagnosis.

Results: RBDSQ scores in PD with RBD and idiopathic RBD groups were similar and higher than those in the PD without RBD group (PD with RBD: 7.2±1.9, idiopathic RBD: 7.9±2.8, PD without RBD: 2.9±1.6). Cronbach's α for RBDSQ sub-scores was 0.73, suggesting a fair internal consistency. A receiver-operator characteristics curve revealed that a total score of 6 points on the RBDSQ represented the best cut-off value for detecting RBD (sensitivity=0.842, specificity=0.962).

Conclusion: RBDSQ could be a useful tool for the screening of RBD in PD patients.

Publication types

  • Clinical Trial
  • Validation Study

MeSH terms

  • Aged
  • Aged, 80 and over
  • Female
  • Humans
  • Male
  • Mass Screening / methods*
  • Mass Screening / standards*
  • Middle Aged
  • Parkinson Disease / complications*
  • REM Sleep Behavior Disorder / diagnosis*
  • REM Sleep Behavior Disorder / etiology*
  • ROC Curve
  • Reproducibility of Results
  • Surveys and Questionnaires / standards*