The Impact of Ovarian Cancer on Life Expectancy in Japan

Authors: Sun, Juan¹; Bi, Lifu²; Chi, Yaojun²; Huang, Guowei³; Fan, Chun⁴; Aoki, Kazuo¹; Kono, Akihiro¹; Hui, Tian¹; Misumi, Junichi¹

Source: Journal of Applied Statistics, Volume 34, Number 6, August 2007 , pp. 741-747(7)

Publisher: Routledge, part of the Taylor & Francis Group

Abstract:

The purpose of this study was to determine how life expectancy is modified by ovarian cancer from 1950-2000. The contributions of ovarian cancer to life expectancy were estimated. The age characteristics of ovarian cancer were detected using the Gompertz relational mortality model. The patterns between years of potential life lost (YPLL) and mortality were obtained by fitting a linear regression equation to the natural logarithm of their ratios. YPLLs are substantially higher in Ireland than in Japan. However, the rates of change were much higher in Japan than in Ireland. YPLLs changed from 0.02 year in 1950 to 0.12 year in 2000. In Japan, there was a sixfold increase in the proportion of YPLLs for death from ovarian cancer relative to those for death from gynaecological cancers during the last half century. The impact of ovarian cancer on life expectancy clearly increased and the age-specific mortality tend to ageing.

Keywords: Ovarian cancer; life expectancy; YPLLs; Gompertz

Document Type: Research article

DOI: http://dx.doi.org/10.1080/02664760701237036

Affiliations: 1: Department of Public Health and Hygiene, Oita Medical University, Oita, Japan 2: Inner Mongolia Medical College, Huhehaote City, Inner Mongolia, China 3: School of Public Health, Tianjin Medical University, Tianjin, China 4: Medical College, Xiamen University, Xiamen, China

Publication date: 2007-08-01

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