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 |