epidemiology test 1

at least two conditions must be met to calculate a cumulative incidence, a perfect cohort and fixed follow- up

false

if you're conducting a study with a long follow-up period, it is probably more appropriate to calculate a cumulative incidence (CI), rather than an incidence density (ID)

false

william far is known for linking a cholera outbreak to the local water pump

false

can be measured as a rate or proportion

incidence

Sorry, no manipulations with clipboard allowed

prevalence of the disease will increase

all of the following reflect a descriptive epidemiologic study EXCEPT

provides answers to the WHY questions

the numerator is the: # of men in the U.S who died from heart disease in 2009. The denominator is the # of men in the U.S population, mid-year in 2009. The fraction is a:

rate

the numerator is the # of men in the U.S who died from heart disease in 2009. the denominator is the # of men in the U.S who died from cancer in 2009. the fraction is a

ratio

consider a hypothetical cohort in which 12 events occur, and the follow-up time for all individuals is 500 person-days. the incidence density, in person-days, is 24/1000 person-days

true

case-fatality rate

used as a measure of disease severity and to predict disease course or outcome number of cause-specific deaths among the incident cases x 10^n/ total number of incident cases