Sleep-Circadian Rhythm
Sleep-related questionnaires and interviews
Pittsburg Sleep Quality Index (PSQI)
The REM Sleep Behavior Disorder Screening Questionnaire (RBDSQ)
STOP Qeustionnaire
Cambridge-Hopkins questionnaire for restless leg syndrome (CH-RLSq)
Morningness-eveningness questionnaire-Korean version (MEQ-K)
Interview for past sleep habits (sleep duration and quality)
Actiwatch monitoring and sleep diaries
A subset of participants wear the Actiwatch 2 on their non-dominant wrist for seven consecutive 24-hour periods.
Sleep diaries were also completed by these individuals.
Sleep diaries were also completed by these individuals.
Polysomnography
A subset of participants undergo overnight polysomnography
