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The relationship between population growth and elderly suicide rates: a cross-national study

Published online by Cambridge University Press:  20 November 2008

Ajit Shah
Ajit Shah*
Affiliation:
Ageing, Ethnicity and Mental Health, University of Central Lancashire, Preston, U.K. and West London Mental Health NHS Trust, London, U.K.
*
Correspondence should be addressed to: Professor Ajit Shah, Consultant Psychiatrist, West London Mental Health NHS Trust, Uxbridge Road, Southall, Middlesex, UB1 3EU, U.K. Phone: +44 208 354 8140; Fax: +44 208 354 8898. Email: [email protected].
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Abstract

Background: Elderly suicide rates are associated with the elderly population size, the proportion of elderly in the general population and the elderly dependency ratio.

Methods: A cross-national study examining the “a priori” hypothesis that the relationship between elderly suicide rates and average annual population growth rates would be curvilinear (U-shaped curve) fitting the quadratic equation y = a + bx + cx2 (where y is the elderly suicide rate, x is the population growth rate and a, b and c are constants) was conducted using data from the World Health Organization and the United Nations.

Results: There was a significant curvilinear (U-shaped curve) relationship between elderly suicide rates and average annual population growth rates fitting the above quadratic equation.

Conclusions: A theoretical model with three sequential stages incorporating population growth, the elderly population size, the proportion of elderly in the general population, life expectancy and birth rates was proposed to explain the findings. Caution should be exercised in the application of this model because of the cross-sectional and ecological study design whereby the findings are subject to ecological fallacy and require rigourous testing in within-country longitudinal studies over time.

Keywords

elderly suicide ratespopulation growthlife expectancy
Type
Research Article
Information
International Psychogeriatrics , Volume 21 , Issue 2 , April 2009 , pp. 379 - 383
Copyright
Copyright © International Psychogeriatric Association 2008

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References

Abrahams, V. J., Abrahams, S. and Jacob, K. S. (2005). Suicide in the elderly in Kanyambadi block, Tamil Nadu, South India. International Journal of Geriatric Psychiatry, 20, 953–955.CrossRefGoogle Scholar
Adityanjee, D. R. (1986). Suicide attempts and suicide in India: cross-cultural aspects. International Journal of Social Psychiatry, 32, 64–73.CrossRefGoogle ScholarPubMed
Bhatia, S. C., Kahn, M. H. and Medirrata, R. P. (1987). High risk suicide factors across cultures. International Journal of Social Psychiatry, 33, 226–236.CrossRefGoogle ScholarPubMed
Daradekh, T. K. (1989). Suicide in Jordan 1980–1985. Acta Psychiatrica Scandinavica, 79, 241–244.CrossRefGoogle Scholar
Diekstra, R. F. W. (1989). Suicide and attempted suicide: an international perspective. Acta Psychiatrica Scandinavica, 80 (Suppl. 354), 1–24.CrossRefGoogle Scholar
Kiemo, K. (2004). Towards a socio-economic and demographic theory of elderly suicides: a comparison of 49 countries at various stages of development. www.soc.ou.se/publications/fulltext/diss2003–3.pdf. Last accessed 2 February 2007.Google Scholar
Knox, K. L., Conwell, Y. and Caine, E. D. (2004). If suicide is a public health problem, what are we doing to prevent it? American Journal of Public Health, 94, 37–45.CrossRefGoogle Scholar
Ko, S. M. and Kua, E. H. (1995). Ethnicity and elderly suicide rates in Singapore. International Psychogeriatrics, 7, 309–317.CrossRefGoogle ScholarPubMed
Kua, E. H., Ko, S. M. and Ng, T. P. (2003). Recent trends in elderly suicide rates in a multi-ethnic Asian city. International Journal of Geriatric Psychiatry, 18, 533–536.CrossRefGoogle Scholar
Lotrakul, M. (2006). Suicide in Thailand during the period 1998–2003. Psychiatry and Neurosciences, 60, 90–95.CrossRefGoogle ScholarPubMed
Moscicki, E. K. (1995). North American perspectives: epidemiology of suicide. International Psychogeriatrics, 7, 137–148.CrossRefGoogle Scholar
Neeleman, J., Mak, V. and Wessely, S. (1997). Suicide by age, ethnic group, coroner's verdict and country of birth: a three-year survey in inner London. British Journal of Psychiatry, 181, 463–467.CrossRefGoogle Scholar
Raleigh, V. S., Bulusu, L. and Balarajan, R. (1990). Suicides among immigrants from the Indian subcontinent. British Journal of Psychiatry, 156, 46–50.CrossRefGoogle Scholar
Sartorius, N. (1995). Recent changes in suicide rates in selected eastern European and other European countries. International Psychogeriatrics, 7, 301–308.CrossRefGoogle ScholarPubMed
Seiden, R. H. (1981). Mellowing with age: factors affecting the non-white suicide rate. International Journal of Ageing and Human Development, 13, 265–284.CrossRefGoogle Scholar
Shah, A. K. (2007). The relationship between suicide rates and age: an analysis of multinational data from the World Health Organization. International Psychogeriatrics, 19, 1141–1152.CrossRefGoogle ScholarPubMed
Shah, A. K. (2008). Association of suicide rates in elderly persons with fertility rates. Psychological Reports, 102, 369–376.CrossRefGoogle ScholarPubMed
Shah, A. K. and De, T. (1998). Suicide and the elderly. International Journal of Psychiatry in Clinical Practice, 2, 3–17.CrossRefGoogle ScholarPubMed
Shah, A. K. and Ganesvaran, T. (1994). Suicide in the elderly. In Chiu, E. and Ames, D. (eds.), Functional Psychiatric Disorders of the Elderly (pp. 221–244). Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Shah, A. K. and MacKenzie, S. (2007). Disorders of ageing across cultures. In Bhugra, D. and Bhui, K. (eds.), Textbook of Cultural Psychiatry (pp. 323–344). Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Shah, A. K., Bhat, R., MacKenzie, S. and Koen, C. (2007). Elderly suicide rates: cross-national comparisons and association with sex and elderly age-bands. Medicine, Science and the Law, 47, 244–252.CrossRefGoogle ScholarPubMed
Shah, A. K., Bhat, R., MacKenzie, S. and Koen, C. (2008a). A cross-national study of the relationship between elderly suicide rates and life expectancy and markers of socio-economic status and healthcare. International Psychogeriatrics, 20, 347–360.Google Scholar
Shah, A. K., Padayatchi, M. and Das, K. (2008b). The relationship between elderly suicide rates and elderly dependency ratios: a cross-national study using data from the WHO data bank. International Psychogeriatrics, 20, 594–604.CrossRefGoogle ScholarPubMed
Stack, S. (1980). Domestic integration and the rate of suicide: a comparative study. Journal of Comparative Family Studies, 11, 249–260.Google Scholar
Wasserman, D., Cheng, Q. and Jiang, G. X. (2005). Global suicide rates among young people aged 15–19. World Psychiatry, 114–120.Google Scholar
Watanabe, N., Hasegawa, K. and Yoshinaga, Y. (1995). Suicide in later life in Japan: urban and rural differences. International Psychogeriatrics, 7, 253–261.CrossRefGoogle ScholarPubMed
Woodbury, M. A., Manton, K. G. and Blazer, D. (1988). Trends in US suicide mortality rates 1968–1982: race and sex differences in age, period and cohort components. International Journal of Epidemiology, 17, 356–352.CrossRefGoogle Scholar
Yip, P. S. F. (2001). An epidemiological profile of suicides in Beijing, China. Suicide and Life Threatening Behaviour, 31, 62–70.CrossRefGoogle ScholarPubMed
Yip, P. S. F. and Tan, R. C. E. (1998). Suicides in Hong Kong and Singapore: a tale of two cities. International Journal of Social Psychiatry, 44, 267–279.CrossRefGoogle Scholar
Yip, P. S. F., Chi, I. and Yu, K. K. (1998). An epidemiological profile of elderly suicides in Hong Kong. International Journal of Geriatric Psychiatry, 13, 631–637.3.0.CO;2-A>CrossRefGoogle ScholarPubMed
Yip, P. S. F., Callanan, C. and Yuen, H. P. (2000). Urban/rural and gender differentials in suicide rates: East & West. Journal of Affective Disorders, 57, 99–106.CrossRefGoogle ScholarPubMed
Yip, P. S. F., Liu, K. Y., Ku, J. and Song, X. M. (2005). Suicide rates in China during a decade of rapid social change. Social Psychiatry and Psychiatric Epidemiology, 40, 792–798.CrossRefGoogle Scholar
Zhang, J. (1998). Suicide in the world: toward a population increase theory of suicide. Death Studies, 22, 525–539.CrossRefGoogle Scholar