fatality : Idioms & Phrases
case-fatality proportion
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noun the number of cases of a disease ending in death divided by the number of cases of the disease; usually expressed as a percentage or as the number of deaths per 1000 cases
WordNet
fatality rate
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noun the ratio of deaths in an area to the population of that area; expressed per 1000 per year
deathrate; mortality rate; death rate; mortality.