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Table 1 Epidemiological indicators, calculations, and interpretation of the results of the indicators

From: The burden of stroke in Brazil in 2016: an analysis of the Global Burden of Disease study findings

Indicator Calculation Interpretation
Mortality No. of deaths/population × 100,000 Proportion of people who die of a disease
Incidence No. of new cases detected during a given time period × 100,000/No. of persons at risk of developing the disease during the same period Number of new cases of a given disease over a defined period in a population at risk of developing the disease
Prevalence Number of known cases of the disease in a given period × 100,000/population during the same period Proportion of people in a given population that present a specific disease at a particular point in time
MIR Mortality rate/incidence rate Indicator used to estimate survival of any disease in 5 years
DALYs YLL + YLD Years of healthy life lost
YLD Number of incident cases x weight of disability x average duration until remission or death The number of years that an individual lives with a functional impairment caused by an illness
YLL Number of deaths x standard life expectancy at the age of death The number of years a person could have lived if the illness that killed him had not occurred
  1. DALYs disability-adjusted life years, MIR mortality-to-incidence ratio, YLD years lived with disability, YLL years of life lost