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A replication of the relationship between elderly suicide rates and the human development index in a cross-national study

Published online by Cambridge University Press:  25 May 2010

Ajit Shah
Ajit Shah*
Affiliation:
Ageing, Ethnicity and Mental Health, International School for Communities, Rights and Inclusion, University of Central Lancashire, Preston, U.K. and West London Mental Health NHS Trust, London, U.K.
*
Correspondence should be addressed to: Professor A. Shah, John Connolly Unit, West London Mental Health NHS Trust, Uxbridge Road, Southall, Middlesex UB1 3EU, U.K. Phone: +44 0208 354 8191; Fax +44 0208 354 8307. Email: [email protected].
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Abstract

Background: A recent cross-national study demonstrated a curvilinear (inverted U-shaped curve) between elderly male suicide rates and the Human Development Index (HDI) fitting the quadratic equation y = a + bx − cx2 where y is the elderly male suicide rate, x is the HDI and a, b and c are constants). This study used only one-year cross-sectional data on suicide rates, and suicide rates can randomly fluctuate year on year.

Methods: A study designed to replicate this curvilinear relationship between elderly suicide rates and the HDI was undertaken by: (i) using one-year average of five years data on suicide rates; and (ii) using more recent data on both elderly suicide rates than used in the previous study. Data were ascertained from the World Health Organization and the United Nations.

Results: There was a significant curvilinear (inverted U-shaped curve) relationship between suicide rates in males aged 65–74 years, males aged 75+ years, females aged 65–74 years and the HDI fitting the quadratic equation y = a + bx − cx2. A similar curvilinear relationship was observed in females aged 75+ years, but the significance level only approached 0.05 level.

Conclusions: The replication of the curvilinear (inverted U-shaped curve) relationship between elderly suicide rates and the HDI by using one-year average of five years data on suicide rates suggests that the observed relationship is robust and accurate.

Keywords

elderly suicideslife expectancysocioeconomic statuseducational status
Type
Research Article
Information
International Psychogeriatrics , Volume 22 , Issue 5 , August 2010 , pp. 727 - 732
Copyright
Copyright © International Psychogeriatric Association 2010

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References

Abel, E. L. and Kruger, M. L. (2005). Educational attainment and suicide rates in the United States. Psychological Reports, 97, 25–28.CrossRefGoogle ScholarPubMed
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.Google Scholar
Cutright, P. and Fernquist, R. M. (2000). Effects of social integration, period, region, and culture of suicide on male age-specific suicide rates: 20 developed countries, 1955–1998. Social Science Research, 29, 148–172.CrossRefGoogle Scholar
Diekstra, R. F. W. (1989). Suicide and attemptede suicide: an international perspective. Acta Psychiatrica Scandinavica, 80 (Suppl 354), 1–24.CrossRefGoogle Scholar
Fernquist, R. M. (2001). Education, race/ethnicity, age, sex, and suicide: individual level data in the United States, 1991–1994. Current Research in Social Psychology, 3, 277–290.Google Scholar
Fukuda, Y., Nakamura, K. and Takano, T. (2005). Cause-specific mortality differences across socioeconomic position of municipalities in Japan, 1973–1977 and 1993–1998: increased importance of injury and suicide in inequality for ages under 75. International Journal of Epidemiology, 34, 100–109.Google Scholar
Gillis, A. R. (1994). Literacy and the civilisation of violence in 19th century France. Sociological Focus, 9, 371–401.Google Scholar
Gunnell, D., Middleston, N., Whitley, E., Dorling, D. and Frankel, S. (2003). Why are suicide rates rising in young men but falling in the elderly? A time-series analysis of trends in England and Wales 1950–1998. Social Science and Medicine, 57, 595–611.Google Scholar
Jacob, K. S., Sharan, P., Mirza, I., Garrido-Cumbrera, M., Seedat, S., Mari, J. J. and Sreen, V. (2007). Global mental health 4. Mental health systems in countries: where are we now?. Lancet, 370, 1061–1077.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
Kowalski, G. S., Faupel, C. E. and Starr, P. D. (1987). Urbanisation and suicides: a study of American counties. Social Forces, 66, 85–101.CrossRefGoogle Scholar
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
Kung, H. C., Liu, X. and Juon, H. S. (2004). Risk factors for suicide in Caucasians and in African Americans: a matched case-control study. Social Psychiatry and Psychiatric Epidemiology, 33, 155–161.Google Scholar
Lester, D. (1990–1991). Mortality from suicide and homocide for African Americans in the U.S.A.: a regional analysis. Omega: Journal of Death and Dying, 22, 216–226.Google Scholar
Lindesay, J. (1991). Suicide in the elderly. International Journal of Geriatric Psychiatry, 6, 355–361.Google Scholar
Lodhi, L. and Shah, A. K. (2004). Psychotropic prescriptions and elderly suicide rates. Medicne, Science and the Law, 44, 236–244.Google Scholar
Lodhi, L. and Shah, A. K. (2005). Factors associated with the recent decline in suicide rates in England and Wales. 1985–1998. Medicne, Science and the Law, 45, 115–120.Google ScholarPubMed
Lorant, V., Kunst, A. E., Huisman, M., Costa, G. and Mackenbach, J. (2005). Socio-economic inequalities in suicide: a European comparative study. British Journal of Psychiatry, 187, 49–54.CrossRefGoogle ScholarPubMed
McIntosh, J. L. (1984). Components of the decline in elderly suicides: suicide in young old and old old by race and sex. Death Education, 8, 113–124.CrossRefGoogle Scholar
Moscicki, E. K. (1995). North American perspectives: epidemiology of suicide. International Psychogeriatrics, 7, 137–148.Google Scholar
Otsu, A., Araki, S., Sakai, R., Yokoyama, K. and Voorhees, A. S. (2004). Effects of urbanization, economic development, and migration of workers on suicide mortality in Japan. Social Sciences and Medicine, 58, 1137–1146.Google Scholar
Rubenowitz, E., Waern, M., Wilhelmson, K. and Allebeck, P. (2001). Life events and psychosocial factors in elderly suicides: a case control study. Psychological Medicine, 31, 1193–1202.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.Google Scholar
Shah, A. K. (2007a). 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. (2007b). The importance of socio-economic status of countries for mental disorders in old age: a development of an epidemiological transition model. International Psychogeriatrics, 19, 785–787.Google Scholar
Shah, A. K. (2007c). The relationship between suicide rates and age: an analysis of multinational data from the World Health Organization. International Psychogeriatrics, 19, 1141–1152.Google Scholar
Shah, A. K. (2009a). The relationship between elderly suicide rates and the Human Development Index: a cross-national study of secondary data from the World Health Organization and the United Nations. International Psychogeriatrics, 21, 69–77.Google Scholar
Shah, A. K. (2009b). The relationship between socio-economic status and mental health funding, service provision and national policy: a cross-national study. International Psychiatry, 6, 44–46.Google Scholar
Shah, A. K. (2009c). Attempted suicide in the elderly in England: age-associated rates, time trends and methods. International Psychogeriatrics, 5, 889–895.Google Scholar
Shah, A. K. (2010). The possible evidence for epidemiological transition hypothesis for elderly suicides. International Psychogeriatrics, 22, 219–226.Google Scholar
Shah, A. K. and Bhat, R. (2008a). The relationship between elderly suicide rates and mental health funding, service provision and national policy: a cross-national study. International Psychogeriatrics, 20, 605–615.Google Scholar
Shah, A. K. and Bhat, R. (2008b). Are elderly suicide rates improved by increased provision of mental health service resources? International Psychogeriatrics, 20, 1230–1237.Google Scholar
Shah, A. K. and Bhat, R. (2009). Does adversity earlier in life affect elderly suicide rates? Cross-national study. International Journal of Psychiatry in Clinical Practice, 13, 273–277.Google Scholar
Shah, A. K. and Coupe, J. (2009). A comparative study of elderly suicides in England and Wales, Scotland and Northern Ireland: trends over time and age-associated trends. International Psychogeriatrics, 21, 581–587.Google Scholar
Shah, A. K. and De, T. (1998). Suicide and the elderly. International Journal of Psychiatry in Clinical Practice, 2, 3–17.Google Scholar
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.Google 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.Google Scholar
Shah, A. K., Bhatt, 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., Bhat, R., MacKenzie, S. and Koen, C. (2008b). Elderly suicide rates: cross-national comparisons over a ten year time period. International Psychogeriatrics, 20, 673–686.Google Scholar
Simpson, M. E. and Conklin, G. H. (1989). Socioeconomic development, suicide and religion: a test of Durkhiem's theory of religion and suicide. Social Forces, 67, 945–964.CrossRefGoogle Scholar
Stack, S. (1998). Education and risk of suicide: an analysis of African Americans. Sociological Focus, 31, 295–302.Google Scholar
Suh, G. K. and Shah, A. K. (2001). A review of epidemiological transition in dementia: cross-national comparisons of the indices related to Alzheimer's disease and vascular dementia. Acta Psychiatrica Scandinavica, 104, 4–11.CrossRefGoogle ScholarPubMed
Vijayakumar, L., Nagaraj, K., Pirkis, J. and Whiteford, H. (2005). Suicide in developing countries (1): frequency, distribution, and association with socio-economic indicators. Crisis, 26, 104–111.CrossRefGoogle Scholar
Wasserman, D., Cheng, Q. and Jiang, G. X. (2005). Global suicide rates among young people aged 15–19. World Psychiatry, 4, 114–120.Google Scholar
Willis, L. A., Coombs, D. W., Drentea, P. and Cockerham, W. C. (2003). Uncovering the mystery: factors of African American suicide. Suicide and Life Threatening Behaviour, 33, 412–429.Google Scholar
Yip, P. S. F., Liu, K. Y., Hu, 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.Google Scholar
Zhang, J. (1998). Suicide in the world: toward a population increase theory of suicide. Death Studies, 22, 525–539.Google Scholar