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  • Open Access

Seasonal hospitalization in patients with mood disorder

  • 1,
  • 2,
  • 1,
  • 1,
  • 1 and
  • 1
Annals of General Psychiatry20087(Suppl 1):S192

https://doi.org/10.1186/1744-859X-7-S1-S192

Published: 17 April 2008

Keywords

  • Public Health
  • Demographic Characteristic
  • Weather Condition
  • Male Patient
  • Seasonal Pattern

Background

Several studies have indicated the participant role of the season of the year as a factor of manifestation of mood disorders. Furthermore, although the seasonal pattern of admissions of patients with mood disorders have been extensively studied in international bibliography, just few relative references are present in Greece. The objective of this study is to investigate the seasonal necessity of hospitalization in Greek patients with mood disorders.

Materials and methods

The demographic characteristics of 448 inpatients diagnosed with mood disorder during a four years' period were reviewed. We specifically recorded sex, age, duration of hospitalization, season of admission and the number of patients hospitalized involuntary.

Results

Females were statistically more (x2 p<0.05) than males (60.9% vs 39.1%). Mean age of the sample was 44.7 years (±13.61) whereas mean duration of hospitalization was 18.85 days (± 16.74). Age and duration of hospitalization doesn't seem to differentiate as to sex (t test p>0.05). The number of involuntarily hospitalized patients doesn't differentiate as to season of admission (x2 p>0.05) however we observed an increase of admissions of voluntarely hospitalized male patients in spring (x2 p<0.05). Finally, the duration of hospitalization is not influenced by season of admission. Also, the age factor is indipendent to the season of hospitalization (ANOVA p>0.05).

Conclusions

The results report an increase of necessity of hospitalizations in patients with mood disorders in spring, a finding which is in agreement with relevant international studies. Increased sunlight or environmental temprature may be risk factors. Further studies are required in order to investigate if these findings are related to weather conditions or other risk factors.

Authors’ Affiliations

(1)
Psychiatric Department, “Sotiria” General Hospital, Athens, Greece
(2)
Second Psychiatric Department, “Attikon” General Hospital, University of Athens, Greece

References

  1. D' Mello DA, McNeil JA, Msibi B: Seasons and bipolar disorder. Ann Clin Psychiatry. 1995, 7 (1): 11-8.View ArticleGoogle Scholar
  2. Morken G, Lilleeng S, Linaker OM: Seasonal variation in suicides and in admissions to hospital for mania and depression. J Affect Disord. 2002, 69 (1-3): 39-45. 10.1016/S0165-0327(00)00373-6.View ArticlePubMedGoogle Scholar

Copyright

© Karkanias et al.; licensee BioMed Central Ltd. 2008

This article is published under license to BioMed Central Ltd.

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