2.1 Proportional Measures Flashcards
Measures of disease frequency
Prevalence
->point
->period
Incidence
->cumulative
->rate
What do measures of disease frequency assess?
Frequency and distribution of health conditions/outcomes in populations
How are measures of disease frequency express
As %
-as they are often binary outcomes
Prevalence
Number of existing cases
Over
Population at risk
Population at risk
All the individuals in the population who could potentially develop the condition
Point prevalence
Existing cases at a specific point in time
-population age risk, excludes those who are immune to the disease
Period prevalence
Existing cases during a specific time period
More applicable for chronic illnesses
Cumulative incidence
New cases
Over
Population INITIALLY at risk
Tbc