Adjust Age Article For Free

"Crude Rate" refers to rates per 100,000 population. "Age-Adjusted Rate" refers to rates that are calculated as if the deaths occurred in a population with the same age structures. As the CDC website explains: "Some injuries occur more often among certain age groups than others.

For example, a county with an older population will have a higher crude death rate due to cancer, even though its risk exposure levels and age-specific cancer rates may the same as those in other counties.

What is age-adjustment? Age-adjustment is a statistical process applied to rates of disease, death, injuries or other health outcomes which allows communities with different age structures to be compared.

The age-adjusted rate can be considered an average of each of the individual age-specific rates, but rather than being a simple average, it is a weighted average with each age-specific rate weighted by the proportion of people in the same age group in the standard population.

To apply direct age-adjustment to a set of rates, the age-specific rate for each age group in the study population is multiplied by the appropriate weight in the standard population. The sum of these products is the directly age-adjusted, or age-standardized rate.

A "standard" population distribution is used to adjust death and hospitalization rates. The age-adjusted rates are rates that would have existed if the population under study had the same age distribution as the "standard" population. Therefore, they are summary measures adjusted for differences in age distributions.

When comparing two age-adjusted death rates (for two different or independent populations) to determine whether a significant difference exists between them, 95% confidence intervals for both rates are compared. If the intervals overlap, then there is no significant difference.

Age-adjusted rates were calculated by dividing the expected number of deaths by the population (standard) and multiplying by 1,000.

Age-adjusted rates were calculated by dividing the expected number of deaths by the population (standard) and multiplying by 1,000.

Age-adjusted rates were calculated by dividing the expected number of deaths by the population (standard) and multiplying by 1,000.