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KMID : 0389520050120020111
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Sleep Medicine.Psychophysiology
2005 Volume.12 No. 2 p.111 ~ p.116
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Seasonal Variations in Mood and Behavior in Korean High School Students
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Lee Moon-Soo
Joo I-Jin
Hong Sung-Do
Ko Young-Hoon
Kim Seung-Hyun
Joe Sook-Haeng
Jung In-Kwa
Kim Leen
Lee Heon-Jeong
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Abstract
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Objectives: Although many reports have been written on seasonal variations in mood and behavior in foreign countries, few reports have dealt with Korean adolescents, except medical students. The goal of this study was to estimate the frequency of seasonal variations in mood and behavior among Korean high school students.
Methods: A total of 656 high school students living in southeastern Seoul participated in this study. The subjects were investigated with the Korean translated version of the Seasonal Pattern Assessment Questionnaire (SPAQ), and their responses were evaluated for seasonal patterns in mood and behavior change according to Kasper’s criteria to make SAD (seasonal affective disorder) or SSAD (subclinical seasonal affective disorder) diagnosis.
Results: A total of 565 subjects completed the questionnaire and the responses (M:F=324:241) were collected and used for analysis. The mean age was 16.73 (SD=0.65) years, and mean global seasonality score 5.88 (SD=4.72). Of the respondents, 413 (73.1%) reported problems related with seasonal changes. Total prevalence rates were 13.6% for SAD, 10.8% for S-SAD. The estimated frequencies were 5.1% for summer SAD, 3.2% for summer S-SAD, 0.5% for winter SAD and 1.1% for winter S-SAD. The prevalence rate of summer SAD or S-SAD was higher than winter SAD or S-SAD.
Conclusion: The subjects showed a higher prevalence rate of summer type than winter type in SAD or S-SAD. These results were similar to those of other studies carried out in East Asian countries. However, the unpleasant feelings resulting from high temperature and humidity in summer rather than depression may have influenced the results. Therefore, it is necessary to make new SAD criteria of the SPAQ suitable for East Asian countries.
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KEYWORD
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Seasonality, Seasonal affective disorder, Epidemiology, Korean adolescents
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