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BMC Psychiatry
Published in: BMC Psychiatry 1/2015

Open Access 01-12-2015 | Research article

Associations between climate variability, unemployment and suicide in Australia: a multicity study

Authors: Xin Qi, Wenbiao Hu, Andrew Page, Shilu Tong

Published in: BMC Psychiatry | Issue 1/2015

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Abstract

Background

A number of studies have examined the associations of suicide with meteorological variables (MVs) and socioeconomic status but the results are inconsistent. This study assessed whether MVs and unemployment were associated with suicide in eight Australian capital cities.

Methods

Data on suicide, population and unemployment rate (UER) between 1985 and 2005 were from the Australian Bureau of Statistics. MVs was provided by Australian Bureau of Meteorology. A generalized linear regression model with Poisson link was applied to explore the association of suicide with MVs and UER.

Results

Temperature difference (ΔT, the difference in mean temperature between current month and previous one month) was positively associated with suicide in Sydney, Melbourne, Brisbane and Hobart. There was also a significant and positive association between UER and suicide in Sydney, Melbourne, Brisbane and Perth. MVs had more significant associations with violent suicide than that of non-violent suicide. There were no consistent associations between other MVs and suicide. A significant interaction between ΔT and UER on suicide was found in Sydney, Melbourne and Brisbane, such that increased temperature amplified the magnitude of the association between UER and suicide.

Conclusions

ΔT and UER appeared to jointly influence the occurrence of suicide in Australian capital cities. This finding may have implications for developing effective suicide prevention strategies.
Literature
1.
WHO. Preventing suicide, a global imperative. Geneva, Switzerland: World Health Organization; 2014.
2.
Berry HL, Bowen K, Kjellstrom T. Climate change and mental health: a causal pathways framework. Int J Public Health. 2010;55:123–32.CrossRefPubMed
3.
Durkheim E. Suicide: a study in sociology [1897]. Glencoe, Illinois: The Free Press; 1951. Translated by Spaulding JA and Simpson G.
4.
Deisenhammer EA. Weather and suicide: the present state of knowledge on the association of meteorological factors with suicidal behaviour. Acta Psychiatr Scand. 2003;108:402–9.CrossRefPubMed
5.
Ajdacic-Gross V, Lauber C, Sansossio R, Bopp M, Eich D, Gostynski M, et al. Seasonal associations between weather conditions and suicide-evidence against a classic hypothesis. Am J Epidemiol. 2007;165:561–9.CrossRefPubMed
6.
Kim Y, Kim H, Kim DS. Association between daily environmental temperature and suicide mortality in Korea (2001–2005). Psychiatry Res. 2011;186:390–6.CrossRefPubMed
7.
Lee HC, Lin HC, Tsai SY, Li CY, Chen CC, Huang CC. Suicide rates and the association with climate: a population-based study. J Affect Disord. 2006;92:221–6.CrossRefPubMed
8.
Likhvar V, Honda Y, Ono M. Relation between temperature and suicide mortality in Japan in the presence of other confounding factors using time-series analysis with a semiparametric approach. Environ Health Prev Med. 2011;16:36–43.CrossRefPubMed
9.
Page LA, Hajat S, Kovats RS. Relationship between daily suicide counts and temperature in England and Wales. Br J Psychiatry. 2007;191:106–12.CrossRefPubMed
10.
Preti A, Miotto P. Seasonality in suicides: the influence of suicide method, gender and age on suicide distribution in Italy. Psychiatry Res. 1998;81:219–31.CrossRefPubMed
11.
Ruuhela R, Hiltunen L, Venäläinen A, Pirinen P, Partonen T. Climate impact on suicide rates in Finland from 1971 to 2003. Int J Biometeorol. 2009;53:167–75.CrossRefPubMed
12.
Tsai JF. Socioeconomic factors outweigh climate in the regional difference of suicide death rate in Taiwan. Psychiatry Res. 2010;179:212–6.CrossRefPubMed
13.
Tsai JF, Cho W. Temperature change dominates the suicidal seasonality in Taiwan: a time-series analysis. J Affect Disord. 2012;136:412–8.CrossRefPubMed
14.
Tsai JF, Cho W. The secular trend of suicide rate and the socio-economic, media, and climatic factors in Taiwan, 1976–2009: a population-based study. J Affect Disord. 2011;129:270–4.CrossRefPubMed
15.
Dixon PG, McDonald AN, Scheitlin KN, Stapleton JE, Allen JS, Carter WM, et al. Effects of temperature variation on suicide in five U.S. counties, 1991–2001. Int J Biometeorol. 2007;51:395–403.CrossRefPubMed
16.
Yang AC, Tsai SJ, Huang NE. Decomposing the association of completed suicide with air pollution, weather, and unemployment data at different time scales. J Affect Disord. 2011;129:275–81.CrossRefPubMed
17.
ABS. 3309.0. Suicides, Australia, 1921 to 1998. Canberra, Australia: Australian Bureau of Statistics; 2000.
18.
ABS. 3309.0. Suicides, Australia, 2005. Canberra, Australia: Australian Bureau of Statistics; 2007.
19.
ABS. 3309.0. Suicides, Australia, 2010. Canberra, Australia: Australian Bureau of Statistics; 2012.
20.
Cheung YT, Spittal MJ, Pirkis J, Yip PS. Spatial analysis of suicide mortality in Australia: investigation of metropolitan-rural-remote differentials of suicide risk across states/territories. Soc Sci Med. 2012;75:1460–8.CrossRefPubMed
21.
22.
Hanigan IC, Butler CD, Kokic PN, Hutchinson MF. Suicide and drought in New South Wales, Australia, 1970–2007. Proc Natl Acad Sci U S A. 2012;109:13950–5.CrossRefPubMedPubMedCentral
23.
Nicholls N, Butler CD, Hanigan I. Inter-annual rainfall variations and suicide in New South Wales, Australia, 1964–2001. Int J Biometeorol. 2006;50:139–43.CrossRefPubMed
24.
25.
26.
Tong S, McMichael AJ, Baghurst PA. Interactions between environmental lead exposure and sociodemographic factors on cognitive development. Arch Environ Health. 2000;55:330–5.CrossRefPubMed
27.
Yu W, Vaneckova P, Mengersen K, Pan X, Tong S. Is the association between temperature and mortality modified by age, gender and socio-economic status? Sci Total Environ. 2010;408:3513–8.CrossRefPubMed
28.
MapInfo Corporation. MapInfo Professional 10.5 User Guide. NY, U.S.A: MapInfo Corporation; 2010.
29.
Arbuckle JL. IBM SPSS Amos 21 User’s Guide. NY, U.S.A: IBM Corporation; 2012.
30.
Lin HC, Chen CS, Xirasagar S, Lee HC. Seasonality and climatic associations with violent and nonviolent suicide: a population-based study. Neuropsychobiology. 2008;57:32–7.CrossRefPubMed
31.
Lambert GW, Reid C, Kaye DM, Jennings GL, Esler MD. Effect of sunlight and season on serotonin turnover in the brain. Lancet. 2002;360:1840–2.CrossRefPubMed
32.
Zhang G, Tao R. Enhanced responsivity of 5-HT(2A) receptors at warm ambient temperatures is responsible for the augmentation of the 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI)-induced hyperthermia. Neurosci Lett. 2011;490:68–71.CrossRefPubMed
33.
Turecki G, Brière R, Dewar K, Antonetti T, Lesage AD, Phil M, et al. Prediction of level of serotonin 2A receptor binding by serotonin receptor 2A genetic variation in postmortem brain samples from subjects who did or did not commit suicide. Am J Psychiatry. 1999;156:1456–8.PubMed
34.
Pandey GN, Dwivedi Y, Rizavi HS, Ren X, Pandey SC, Pesold C, et al. Higher expression of serotonin 5-HT2A receptors in the postmortem brains of teenage suicide victims. Am J Psychiatry. 2002;159:419–29.CrossRefPubMed
35.
36.
Gunn KM, Kettler LJ, Skaczkowski GL, Turnbull DA. Farmers’ stress and coping in a time of drought. Rural Remote Health. 2012;12:2071.PubMed
37.
Kelly BJ, Lewin TJ, Stain HJ, Coleman C, Fitzgerald M, Perkins D, et al. Determinants of mental health and well-being within rural and remote communities. Soc Psychiatry Psychiatr Epidemiol. 2011;46:1331–42.CrossRefPubMed
38.
Sartore GM, Kelly B, Stain HJ. Drought and its effect on mental health–how GPs can help. Aust Fam Physician. 2007;36:990–3.PubMed
39.
Linkowski P, Martin F, De Maertelaer V. Effect of some climatic factors on violent and non-violent suicides in Belgium. J Affect Disord. 1992;25:161–6.CrossRefPubMed
40.
Vyssoki B, Kapusta ND, Praschak-Rieder N, Dorffner G, Willeit M. Direct effect of sunshine on suicide. JAMA Psychiatry. 2014;71(11):1231–7.CrossRefPubMed
41.
Maes M, De Meyer F, Thompson P, Peeters D, Cosyns P. Synchronized annual rhythms in violent suicide rate, ambient temperature and the light–dark span. Acta Psychiatr Scand. 1994;90:391–6.CrossRefPubMed
42.
Lambert G, Reid C, Kaye D, Jennings G, Esler M. Increased suicide rate in the middle-aged and its association with hours of sunlight. Am J Psychiatry. 2003;160:793–5.CrossRefPubMed
43.
Praschak-Rieder N, Willeit M, Wilson AA, Houle S, Meyer JH. Seasonal variation in human brain serotonin transporter binding. Arch Gen Psychiatry. 2008;65:1072–8.CrossRefPubMed
44.
Chang SS, Sterne JA, Huang WC, Chuang HL, Gunnell D. Association of secular trends in unemployment with suicide in Taiwan, 1959–2007: a time-series analysis. Public Health. 2010;124:49–54.CrossRefPubMed
45.
Milner A, Page A, Lamontagne AD. Duration of unemployment and suicide in Australia over the period 1985–2006: an ecological investigation by sex and age during rising versus declining national unemployment rates. J Epidemiol Community Health. 2013;67:237–44.CrossRefPubMed
46.
Yamasaki A, Araki S, Sakai R, Yokoyama K, Voorhees AS. Suicide mortality of young, middle-aged and elderly males and females in Japan for the years 1953–96: time series analysis for the effects of unemployment, female labour force, young and aged population, primary industry and population density. Ind Health. 2008;46:541–9.CrossRefPubMed
47.
Preti A. The influence of seasonal change on suicidal behaviour in Italy. J Affect Disord. 1997;44:123–30.CrossRefPubMed
48.
Metadata
Title
Associations between climate variability, unemployment and suicide in Australia: a multicity study
Authors
Xin Qi
Wenbiao Hu
Andrew Page
Shilu Tong
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2015
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-015-0496-8

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