Point prevalence: Difference between revisions
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==Overview== | ==Overview== | ||
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.{{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}} | 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.<ref>{{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}}</ref> | ||
==Calculation== | ==Calculation== | ||
Latest revision as of 18:32, 21 December 2011
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Assistant Editor(s)-In-Chief: Kristin Feeney, B.S.
Overview
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.[1]
Calculation
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.