Three-year averages were used to improve the precision of the annual estimates. Two-year averages were used when three years of data were not available.
Data Source: Information came from the CDC's Behavioral Risk Factor Surveillance System. Data computed by personnel of the CDC's Division of Diabetes Translation.
Suggested Citation: Centers for Disease Control and Prevention: National Diabetes Surveillance System. Available online at: http://www.cdc.gov/diabetes/statistics/index.htm. Retrieved [01/16/2009].
* Crude: The crude percentage is the raw percentage or the unadjusted estimate.
† Age-Adjusted: The age-adjusted percentage is an artificial estimate that minimizes the effects of different age distributions and allows comparisons between different populations. It represents what the crude percentage would have been in the study population if that population had the same age distribution as a standard population (that is, a population in which the age composition is known precisely, for example, as a result of a census).
‡ Data are missing or not available.
