HESC 401 Lecture Notes - Lecture 3: Prevalence
19 Sep 2016
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Document Summary
Understand the relationship between incidence and prevalence. Distinguish between the different types of surveillance. Morbidity is a description of the number of sick people in a population; this is not the same as mortality. Rate: proportion that includes change over time: proportion: a fraction that designates how much of a population is affected by a disease. Disease occurrences are calculated by rates and proportions. It is the number of new cases of a disease occurring in the population during a specific time period divided by the number of people at risk for developing that disease during that same period of time. This is important because it measures the new cases of a disease in a population. The incidence rate is also a measure of risk. The number of people at risk for developing that disease during that same period of time.
