International Journal of Biometeorology

, Volume 62, Issue 12, pp 2109–2118 | Cite as

Investigating the effect of climatic parameters on mental disorder admissions

  • Leili Tapak
  • Zohreh MaryanajiEmail author
  • Omid Hamidi
  • Hamed Abbasi
  • Roya Najafi-Vosough
Original Paper


The main objective of this study was to evaluate the role of climatic parameters and phenomena including the monthly number of dusty/rainy/snowy/foggy days, cloudiness (Okta), horizontal visibility, and barometric pressure (millibar) on major depressive disorder, bipolar, schizophrenia, and schizoaffective admissions. The monthly data related to the number of admissions in Farshchian hospital and climatic parameters from March 2005 to March 2017 were extracted. Random forest regression and dynamic negative binomial regression were used to examine the relationship between variables; the statistical significance was considered as 0.05. The number of dusty/rainy/snowy/foggy days, cloudiness, and the number of days with vision less than 2 km had a significant positive relationship with admissions due to schizophrenia (p < 0.05). Barometric pressure had a negative effect on schizophrenia admissions (p < 0.001). The number of dusty/rainy/snowy/foggy days and cloudiness had a significant effect on schizoaffective admissions (p < 0.05). Bipolar admissions were negatively associated with rainy days and positively associated with dusty days and cloudiness (p < 0.05). The number of rainy/dusty/snowy days and cloudiness had a positive significant effect on major depressive disorder admissions. The results of the present study confirmed the importance of climatic parameter variability for major depressive disorder, bipolar, schizophrenia, and schizoaffective admissions.


Climate Major depressive disorder Bipolar, schizophrenia Schizoaffective 



We would like to thank the Vice-Chancellor of Research and Technology, Hamadan University of Medical Sciences, for the approval and support of the study.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© ISB 2018

Authors and Affiliations

  • Leili Tapak
    • 1
    • 2
  • Zohreh Maryanaji
    • 3
    Email author
  • Omid Hamidi
    • 4
  • Hamed Abbasi
    • 5
  • Roya Najafi-Vosough
    • 1
  1. 1.Department of Biostatistics, School of Public HealthHamadan University of Medical SciencesHamadanIran
  2. 2.Modeling of Noncommunicable Diseases Research CenterHamadan University of Medical SciencesHamadanIran
  3. 3.Department of GeographySayyed Jamaleddin Asadabadi UniversityAsadabadIran
  4. 4.Department of ScienceHamedan University of TechnologyHamedanIran
  5. 5.Department of GeographyLorestan UniversityKhorramabadIran

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