Behavioral Risk Factor Survey
Age adjustment is the application of age-specific percentages in a population of interest to a standardized age distribution.
It enhances the comparability of populations by controlling for the effects of their differing age compositions. The
age-adjusted percentage for a population of interest can be compared to that of a different age-adjusted population at the same
point in time or the same population at a different point in time.
Age-adjusted percentages in the Behavioral Risk Factor Survey modules are calculated using the direct method based on the year
2000 U.S. standard population.
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Last Revised: November 08, 2011