A method for calculating age-weighted death proportions for comparison purposes

A method for calculating age-weighted death proportions for comparison purposes

Author Marcopito, Luiz F Autor UNIFESP Google Scholar
Berlin, J. A. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Univ Penn
Abstract Objective To introduce a method for calculating age-weighted death proportions (wDP) for comparison purposes.Materials and Methods A methodological study using secondary data from the municipality of São Paulo, Brazil (1980-1994) was carried out. First, deaths are weighted in terms of years of potential life lost before the age of 100 years. Then, in order to eliminate distortion of comparisons among proportions of years of potential life lost before the age of 100 years (PYPLL-100), the denominator is set to that of a standard age distribution of deaths for all causes. Conventional death proportions (DP), PYPLL-100, and wDP were calculated.Results Populations in which deaths from a particular cause occur at older ages exhibit lower wDP than those in which deaths occur at younger ages. the sum of all cause-specific wDP equals one only when the test population has exactly the same age distribution of deaths for all causes as that of the standard population.Conclusion Age-weighted death proportions improve the information given by conventional DP, and are strongly recommended for comparison purposes.
Keywords epidemiology
epidemiologic methods
mortality
age-standardization
proportionate mortality
Language English
Date 1998-12-01
Published in International Journal of Epidemiology. Oxford: Oxford Univ Press, v. 27, n. 6, p. 1044-1052, 1998.
ISSN 0300-5771 (Sherpa/Romeo, impact factor)
Publisher Oxford Univ Press
Extent 1044-1052
Origin http://dx.doi.org/10.1093/ije/27.6.1044
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000078602900019
URI http://repositorio.unifesp.br/handle/11600/25984

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