Lecture 2 - Health Measures I Flashcards
What does picot stand for?
participants, intervention, comparator, outcome. time
Which measure has dimensions?
Rates have dimensions, proportions are dimensionless
Which measure has bounds?
Proportions have bounds, rates do not
What is prevalence equation?
of diseased/Population at start
What is incidence proportion equation?
of new cases/Risk population at start
Incidence proportion assumes what?
no recurence of event
Whats the probability that a population member will contract this disease within this time frame?
incidence proportion
Define attack rate
incidence proportion in setting of outbreak
Whats the risk of getting the disease during a specified time period in this place?
Attack rate
Define outbreak
Sudden increase in occurrences of a disease in a particular time and place
What are the issues with incidence proportion?
everyone being studied has to be followed for a year, diseases reoccur, chronic disease
How do you solve issues with incidence proportion?
incidence rate
What is the equation for incidence rate?
of new cases/ PT at risk
What is the equation for attack rate?
of new cases in exposed/ exposed population
What characteristics does a participant need to contribute to PT?
disease free but still at risk of developing disease
