PMID: 2484481Nov 1, 1989Paper

Mortality in Sardinia: table of survival and potential years of life lost

Annali di igiene : medicina preventiva e di comunità
P Contu, B Scarpa

Abstract

Mortality rates have often been used to measure levels of health in a population. The "PYLL indicator" and the "life expectancy with zero mortality for one cause" give high weights to early deaths. In this paper we use these tools to evaluate the impact of five different causes of death (cardiov. dis., neoplasms, respirat. dis., accidents, digestive s. dis.). The rate of PYLL per 1000 population is given by [formula: see text] where Di delta = number of deaths between ages i and i+1; P = number of persons between ages i and i+1; w = age limit. The probability of death in the interval i - i + 1 is qi = ni Di/Pi/1 + 0.5 . ni Di/Pi where ni = number of years in the interval; Pi = population; Di . delta = number dying The probability of survival is pi = 1 - qi. The probability of death if the risk delta is eliminated is qi . delta = 1 - pi (Di delta-Di)/Di The probability of survival until age i is poi = II pi and, if the risk delta is eliminated, poi . delta = II pi . delta. The expectation of life at birth is eo = 0.5 . ni + poi . 0.5 (ni - 1 + ni) + po omega (0.5 . n omega-1 + P omega/D omega) and, if the risk is eliminated, eo . delta = 0.5 . n i + poi . delta . 0.5 (ni - 1 + ni) + po omega . delta (0.5 . n omega - 1 + P omega/...Continue Reading

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