The utility of a Korean version of the REM sleep behavior disorder screening questionnaire in patients with obstructive sleep apnea

The RBDSQ-K had acceptable sensitivity and specificity for screening persons with probable RBD from healthy subjects and OSA subjects when the cutoff score was 4.5 and 6.5 points, respectively. However, attention must be paid to the possibility of false positives when using this scale, especially in OSA subjects with daytime sleepiness.