Point prevalence: Difference between revisions
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In [[epidemiology]], '''point prevalence''' is a measure of the proportion of people in a population who have a disease or condition at a particular time, such as a particular date. It is like a snap shot of the disease in time. This is in contrast to [[period prevalence]] which is a measure of the proportion of people in a population who have a disease or condition over a specific period of time, say a season, or a year. | |||
Point prevalence can be described by the formula: | |||
Prevalence = Number of existing cases on a specific date ÷ Number of people in the population on this date | |||
==References== | |||
{{cite book|author=Gerstman, B.B.|year=2003|title=Epidemiology Kept Simple: An Introduction to Traditional and Modern Epidemiology (2nd ed.)|location=Hoboken, NJ|publisher=Wiley-Liss}} | |||
{{stub}} | {{stub}} | ||
[[Category:Epidemiology]] | [[Category:Epidemiology]] | ||
Revision as of 13:52, 12 February 2007
In epidemiology, point prevalence is a measure of the proportion of people in a population who have a disease or condition at a particular time, such as a particular date. It is like a snap shot of the disease in time. This is in contrast to period prevalence which is a measure of the proportion of people in a population who have a disease or condition over a specific period of time, say a season, or a year.
Point prevalence can be described by the formula:
Prevalence = Number of existing cases on a specific date ÷ Number of people in the population on this date
References
Gerstman, B.B. (2003). Epidemiology Kept Simple: An Introduction to Traditional and Modern Epidemiology (2nd ed.). Hoboken, NJ: Wiley-Liss.
