Flashcards in 0217 - Basic Measures in Population Health - EG Deck (11):
The proportion of individuals in a population who have a disease at a specific point or period of time.
The number of new health-related events in a (defined) population within a specific point of time.
Define cumulative incidence.
The proportion of people who develop disease from those at risk within a specific time period.
Define incidence rate.
A measurement of how quickly people are developing disease. The number of people per unit time.
the product of time and the numbers of the population who were affected, for example 100 person-years is the same as 100 people followed for 1 year or 50 for 2, 200 for 1/2.
List some factors of disease that increase its prevalence within a population.
long duration, incidence increase, in-migration of cases or persons at risk/susceptible, out-migration of healthy people, improved diagnostics/better reporting/treatment.
List some factors of disease that decrease its prevalence within a population.
shorter duration, high case-fatality, decrease in incidence, in-migration of health people, out migration of cases or persons at risk/susceptible, improved cure rate.
Define mortality rate.
the number of deaths in a given period within the population.
Define survival rate.
proportion of patients still alive from diagnosis to a given period.
Define disability-free life expectancy.
The number of years expected to live without some degree of disability at a given age