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01-09-2018 | Neurology • Original Article

Validation of the Korean Munich Chronotype Questionnaire

Authors: Sooyeon Suh, Soo Hyun Kim, Hyera Ryu, Su Jung Choi, Eun Yeon Joo

Published in: Sleep and Breathing | Issue 3/2018

Abstract

Purpose

The Munich Chronotype Questionnaire (MCTQ) assesses actual sleep-wake timing and has advantages compared to prior chronotype questionnaires in that it differentiates sleep-wake patterns between work days and free days and uses corrected mid-sleep time on free days after correcting for accumulated sleep debt over the week to categorize chronotype. The current study, we validated the Korean version of the MCTQ.

Methods

In this study, 310 participants (mean age = 27.09 ± 5.64; 78.1% females) completed the Korean version of the MCTQ.

Results

MCTQ parameters were significantly correlated with MEQ (Morningness-Eveningness Questionnaire) scores (│r│ ≥ 0.48), and test-retest reliability was ≥ 0.72. Cutoff scores of 2.5%, which correlated to 2.36 and 8.57 mid-sleep times in our sample, showed the best convergence with MEQ when categorizing chronotype.

Conclusions

Our study suggests that the MCTQ is a useful questionnaire in assessing chronotype in young adults.

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Title: Validation of the Korean Munich Chronotype Questionnaire
Authors: Sooyeon Suh
Soo Hyun Kim
Hyera Ryu
Su Jung Choi
Eun Yeon Joo
Publication date: 01-09-2018
Publisher: Springer International Publishing
Published in: Sleep and Breathing / Issue 3/2018
Print ISSN: 1520-9512
Electronic ISSN: 1522-1709
DOI: https://doi.org/10.1007/s11325-017-1609-z

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Abstract

Purpose

Methods

Results

Conclusions

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