Abstract
We conducted a cross sectional epidemiological survey in Kyoto, Japan to assess the effect of seasonal changes in mood and behavior in a sample of Japanese graduate students with regard to gender differences, and to estimate the prevalence of seasonal affective disorder (SAD) among them. The final analysis included 192 students (142 males and 50 females, aged 22–30). The participants completed the Japanese version of the self-administered Seasonal Pattern Assessment Questionnaire (SPAQ). In our sample female graduate students were more affected by the seasonal changes than males regarding their Global Seasonality Scores (GSS), mood and behavior changes as assessed by SPAQ. The GSS of the present and previous reports in Japan were similar, but notably lower compared to studies at the same or similar latitudes around the world. The prevalence rates of winter-SAD (SAD), subsyndromal-SAD (Sub-SAD), and summer-SAD (R-SAD) were 1.35%, 0.45%, and 0.9%, respectively. The lower GSS and lower prevalence rates of SAD and sub-SAD compared to most studies in Western and other Oriental countries at similar latitudes using SPAQ may further raise the possibility of an important role for socio-cultural factors in the perception of seasonal changes, and their effect on mood and behavior accordingly. This needs to be further investigated.
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References
Rosenthal NE, Sack DA, Gillin JC et al. Seasonal affective disorder. A description of the syndrome and preliminary findings with light therapy. Arch. Gen. Psychiatry 1984; 41: 72–80.
Lewy AJ, Sack RL, Singer CM, White DM. The phase shift hypothesis for bright light’s therapeutic mechanism of action: theoretical considerations and experimental evidence. Psychopharmacol. Bull. 1987; 23: 349–53.
Terman M, Terman JS, Ross DC. A controlled trial of timed bright light and negative air ionization for treatment of winter depression. Arch. Gen. Psychiatry 1998; 55: 875–82.
Lewy AJ, Bauer VK, Cutler NL et al. Morning vs evening light treatment of patients with winter depression. Arch. Gen. Psychiatry 1998; 55: 890–6.
Mersch PP, Middendorp HM, Bouhuys AL, Beersma DG, van den Hoofdakker RH. Seasonal affective disorder and latitude: a review of the literature. J. Affect. Disord. 1999; 53: 35–48.
Lewitt AJ, Boyle MH. The impact of latitude on the prevalence of seasonal depression. Can. J. Psychiatry 2002; 47: 361–7.
Haggarty JM, Cernovsky Z, Husni M. The limited influence of latitude on rates of seasonal affective disorder. J. Nerv. Ment. Dis. 2001; 189: 482–4.
Takahashi K, Asano Y, Kohsaka M et al. Multi-center study of seasonal affective disorders in Japan. A preliminary report. J. Affect. Disord. 1991; 21: 57–65.
Okawa M, Shirakawa S, Uchiyama M et al. Seasonal variation of mood and behaviour in a healthy middle-aged population in Japan. Acta Psychiatr. Scand. 1996; 94: 211–16.
Ozaki N, Ono Y, Ito A, Rosenthal NE. Prevalence of seasonal difficulties in mood and behavior among Japanese civil servants. Am. J. Psychiatry 1995; 152: 1225–7.
Partonen T, Lonnqvist J. Seasonal affective disorder. Lancet 1998; 352: 1369–74.
Hegde AL, Woodson H. Prevalence of seasonal changes in mood and behavior during the winter months in central Texas. Psychiatry Res. 1996; 62: 265–71.
Magnusson A, Stefansson JG. Prevalence of seasonal affective disorder in Iceland. Arch. Gen. Psychiatry 1993; 50: 941–6.
Imai M, Kayukawa Y, Ohta T, Li L, Nakagawa T. Crossregional survey of seasonal affective disorders in adults and high-school students in Japan. J. Affect. Disord. 2003; 77: 127–33.
Pallos H, Yamada N, Doi Y, Okawa M. Sleep habits, prevalence and burden of sleep disturbances among Japanese graduate students. Sleep Biol. Rhythms 2004; 2: 37–42.
Helmers KF, Danoff D, Steinert Y, Leyton M, Young SN. Stress and depressed mood in medical students, law students, and graduate students at McGill University. Acad. Med. 1997; 72: 708–14.
Toews JA, Lockyer JM, Dobson DJ et al. Analysis of stress levels among medical students, residents, and graduate students at four Canadian schools of medicine. Acad. Med. 1997; 72: 997–1002.
Ministry of Education, Culture, Sports, Science and Technology. Universities and Junior Colleges 2001. [accessed October 2004.] Available from URL: http://www.mext.go.jp/english/statist/
Kasper S, Wehr TA, Bartko JJ, Gaist PA, Rosenthal NE. Epidemiological findings of seasonal changes in mood and behavior. A telephone survey of Montgomery County, Maryland. Arch. Gen. Psychiatry 1989; 46: 823–33.
Muscettola G, Barbato G, Ficca G et al. Seasonality of mood in Italy: role of latitude and sociocultural factors. J. Affect. Disord. 1995; 33: 135–9.
Rosen LN, Targum SD, Terman M et al. Prevalence of seasonal affective disorder at four latitudes. Psychiatry Res. 1990; 31: 131–44.
Sakamoto K, Kamo T, Nakadaira S, Tamura A, Takahashi K. A nationwide survey of seasonal affective disorder at 53 outpatient University clinics in Japan. Acta Psychiatr. Scand. 1993; 87: 258–65.
Han L, Du Wang KZ, Cheng Y, Simons JS, Rosenthal NE. Seasonal variations in mood and behavior among Chinese medical students. Am. J. Psychiatry 2000; 157: 133–5.
Han L, Wang K, Du Cheng YZ, Rosenthal NE, Primeau F. Summer and winter patterns of seasonality in Chinese college students: a replication. Compr. Psychiatry 2000; 41: 57–62.
Axelsson J, Stefansson JG, Magnusson A, Sigvaldason H, Karlsson MM. Seasonal affective disorders: relevance of Icelandic and Icelandic-Canadian evidence to etiologic hypotheses. Can. J. Psychiatry 2002; 47: 153–8.
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Pallos, H., Yamada, N., Miyazaki, S. et al. Seasonal variations of mood and behavior among Japanese graduate students. Sleep Biol. Rhythms 3, 27–31 (2005). https://doi.org/10.1111/j.1479-8425.2005.00158.x
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DOI: https://doi.org/10.1111/j.1479-8425.2005.00158.x