Lecture 110 - Morbidity and Mortality

Question 1

Remember that incidence rates describe NEW cases relative to either an at-risk population OR relative to _____-_____.

Answer 1

Person-time (e.g. 1 person is in a study for 3 years and another is in for 2 years, they combine for 5 person years) –> describes incidence density

Question 2

How is prevalence calculated when the avg duration of disease and incidence of disease remain constant?

Answer 2

Prevalence = Incidence x duration

Question 3

______ surveillance uses a group of pre-identified sources to actively OR passively obtain data from.

Answer 3

Sentinel Surveillance