Psychiatry Investig.  2018 Aug;15(8):775-782. 10.30773/pi.2018.04.09.

Validation of the Munich ChronoType Questionnaire in Korean Older Adults

• Ryu H
• Joo EY
• Choi SJ
• Suh S

• KMID: 2419366
• DOI: http://doi.org/10.30773/pi.2018.04.09

Abstract

OBJECTIVE
This study aimed to evaluate psychometric properties of the Munich ChronoType Questionnaire (MCTQ) in a sample of Korean older adults.
METHODS
One-hundred ninety two participants aged 65 and over completed interview-based questionnaires about chronotype, insomnia, depression, and anxiety. Additionally, a small subset of subjects completed a 7-day sleep diary and actigraphy measurements.
RESULTS
Morningness-Eveningness Questionnaire (MEQ) scores were significantly negatively correlated with Midpoint of sleep on free days corrected for sleep debt accumulated through weekdays (MSFsc) (r=-0.45, p < 0.01) assessed by the MCTQ. MSFsc using the MCTQ was significantly positively correlated with MSFsc assessed by both the sleep diary (r=0.74, p < 0.05) and actigraphy (r=0.76, p < 0.05). Additionally, MSFsc assessed by the MCTQ was significantly positively correlated with insomnia (r=0.26, p < 0.01), depression (r=0.25, p < 0.01), and anxiety (r=0.18, p < 0.05). Finally, based on MEQ scores, we derived a cut-off score for the MCTQ that distinguishes morning type and other types (intermediate/evening types) in older adults.
CONCLUSION
The results of these studies supported the validity of the MCTQ in Korean older adults. Additionally, while sleep rhythms in elder adults may be more advanced, eveningness tendency may be still important and indicative of sleep and psychological disturbance.

Keyword

Psychometrics; Validation studies; Sleep disorders; Circadian rhythm; Geriatric assessment; Geriatric psychiatry

MeSH Terms

Actigraphy
Adult*
Anxiety
Circadian Rhythm
Depression
Geriatric Assessment
Geriatric Psychiatry
Humans
Psychometrics
Sleep Initiation and Maintenance Disorders
Sleep Wake Disorders