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Association between Ambient Temperatures and Mental Disorder Hospitalizations in a Subtropical City: A Time-Series Study of Hong Kong Special Administrative Region

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  • Emily Y. Y. Chan

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China
    Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, UK)

  • Holly C. Y. Lam

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China)

  • Suzanne H. W. So

    (Department of Psychology, The Chinese University of Hong Kong, Hong Kong, China)

  • William B. Goggins

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China)

  • Janice Y. Ho

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China)

  • Sida Liu

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China)

  • Phoebe P. W. Chung

    (The Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China)

Abstract

Background : Mental disorders have been found to be positively associated with temperature in cool to cold climatic regions but the association in warmer regions is unclear. This study presented the short-term association between temperatures and mental disorder hospitalizations in a subtropical city with a mean annual temperature over 21 °C. Methods : Using Poisson-generalized additive models and distributed-lagged nonlinear models, daily mental disorder hospitalizations between 2002 and 2011 in Hong Kong were regressed on daily mean temperature, relative humidity, and air pollutants, adjusted for seasonal trend, long-term trend, day-of-week, and holiday. Analyses were stratified by disease class, gender and age-group. Results : 44,600 admissions were included in the analysis. Temperature was positively associated with overall mental-disorder hospitalizations (cumulative relative risk at 28 °C vs. 19.4 °C (interquartile range, lag 0–2 days) = 1.09 (95% confidence interval 1.03, 1.15)), with the strongest effect among the elderly (≥75 years old). Transient mental disorders due to conditions classified elsewhere and episodic mood disorders also showed strong positive associations with temperature. Conclusion : This study found a positive temperature–mental-disorder admissions association in a warm subtropical region and the association was most prominent among older people. With the dual effect of global warming and an aging population, targeted strategies should be designed to lower the disease burden.

Suggested Citation

  • Emily Y. Y. Chan & Holly C. Y. Lam & Suzanne H. W. So & William B. Goggins & Janice Y. Ho & Sida Liu & Phoebe P. W. Chung, 2018. "Association between Ambient Temperatures and Mental Disorder Hospitalizations in a Subtropical City: A Time-Series Study of Hong Kong Special Administrative Region," IJERPH, MDPI, vol. 15(4), pages 1-19, April.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:4:p:754-:d:141072
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    References listed on IDEAS

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    1. Helen Berry & Kathryn Bowen & Tord Kjellstrom, 2010. "Climate change and mental health: a causal pathways framework," International Journal of Public Health, Springer;Swiss School of Public Health (SSPH+), vol. 55(2), pages 123-132, April.
    2. Michael T Schmeltz & Janet L Gamble, 2017. "Risk characterization of hospitalizations for mental illness and/or behavioral disorders with concurrent heat-related illness," PLOS ONE, Public Library of Science, vol. 12(10), pages 1-15, October.
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    Cited by:

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    2. Heather Aydin-Ghormoz & Temilayo Adeyeye & Neil Muscatiello & Seema Nayak & Sanghamitra Savadatti & Tabassum Z. Insaf, 2022. "Identifying Risk Factors for Hospitalization with Behavioral Health Disorders and Concurrent Temperature-Related Illness in New York State," IJERPH, MDPI, vol. 19(24), pages 1-15, December.
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    4. Julia Feriato Corvetto & Ammir Yacoub Helou & Peter Dambach & Thomas Müller & Rainer Sauerborn, 2023. "A Systematic Literature Review of the Impact of Climate Change on the Global Demand for Psychiatric Services," IJERPH, MDPI, vol. 20(2), pages 1-27, January.
    5. Andrea Aguglia & Gianluca Serafini & Andrea Escelsior & Giovanna Canepa & Mario Amore & Giuseppe Maina, 2019. "Maximum Temperature and Solar Radiation as Predictors of Bipolar Patient Admission in an Emergency Psychiatric Ward," IJERPH, MDPI, vol. 16(7), pages 1-11, March.
    6. Michaela Roberts & Kathryn Colley & Margaret Currie & Antonia Eastwood & Kuang-Heng Li & Lisa M. Avery & Lindsay C. Beevers & Isobel Braithwaite & Martin Dallimer & Zoe G. Davies & Helen L. Fisher & C, 2023. "The Contribution of Environmental Science to Mental Health Research: A Scoping Review," IJERPH, MDPI, vol. 20(7), pages 1-36, March.
    7. Fiona Charlson & Suhailah Ali & Tarik Benmarhnia & Madeleine Pearl & Alessandro Massazza & Jura Augustinavicius & James G. Scott, 2021. "Climate Change and Mental Health: A Scoping Review," IJERPH, MDPI, vol. 18(9), pages 1-38, April.
    8. Alice McGushin & Yassen Tcholakov & Shakoor Hajat, 2018. "Climate Change and Human Health: Health Impacts of Warming of 1.5 °C and 2 °C," IJERPH, MDPI, vol. 15(6), pages 1-4, May.
    9. Ma, Tianyi & Moore, Jane & Cleary, Anne, 2022. "Climate change impacts on the mental health and wellbeing of young people: A scoping review of risk and protective factors," Social Science & Medicine, Elsevier, vol. 301(C).

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