Epidemiology Flashcards
percentage of true positives/total people with the dz (PID)
sensitivity
percentage of true negatives/total people without the dz (NIH)
specificity
exclude a dz if a highly sensitive test is negative (SnOUT)
sensitivity use
confirm a diagnosis if a highly specific test is positive (SpIN)
specificity use
probability of a pt with a positive test result having the dz
likelihood ratio positive
sudden increase in the number with dz locality
epidemic
normal occurrence of a dz in a particular locality
endemic
sudden increase in the number with d worldwide
pandemic
number of people living with the d at a given time
prevalence
number of new cases in the population at a given time
incidence
number of people who die from a particular dz per 100,000 people
mortality rate
number of people who have a particular dz per 100,000 people
morbidity rate
dz that has newly appeared - Ebola, SARS< MERS
emerging dz
previously known dz that has increased or spread - MRSA, MDRTb
re-emerging dz