BMED 271 Lecture Notes - Lecture 3: Cumulative Incidence, Prevalence, High High
19 Jan 2020
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Document Summary
Measurements and assessments in health reveal the need for health interventions and they provide evidence about whether or not health interventions are effective. Prevalence = # of existing cases of a disease in a given population. Period prevalence = over a period of time. If pop has high incidence they also have high risk. Cumulative incidence= # of people who develop the disease; a measure of proportion of the population who develop the disease over a period of time. # of new cases of a disease over a time period / total population at risk. Total pop at risk = total pop - # of existing cases ; excludes ppl who already have the disease or are incapable of developing the disease. # of ppl who develop disease/ # of person-years at risk. # of person-years at risk of disease = # of people at risk * # of years at risk.
