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Diabetes Report Card 2012: National and State Profile of Diabetes and Its Complications

Technical Notes

Diabetes data presented in this report card are from the U.S. Census Bureau and various CDC surveys and data collection systems, including the National Health Interview Survey, the National Hospital Discharge Survey, the Behavioral Risk Factor Surveillance System (BRFSS), and the National Vital Statistics System. CDC staff members used data from these original sources to calculate the estimates presented in this report. Many of these data appear in greater detail on CDC’s National Diabetes Surveillance System Web site at http://apps.nccd.cdc.gov/DDTSTRS/default.aspx.

To make meaningful comparisons between states and over time, we used the 2000 U.S. standard population to age adjust our estimated rates. Age adjustment is a statistical process applied to rates of diseases, injuries, and health outcomes. It allows comparisons between communities with different age structures because it proportions rates to a standard age structure. Three-year moving averages are sometimes used to improve the precision of estimates. State estimates in this report card are based on BRFSS data. Because of the limitations of self-reported data in surveys, these estimates may underreport the rates of diagnosed diabetes and prediabetes in the U.S. population.

For more information about the methods used to produce the estimates in this report, see CDC’s National Diabetes Surveillance System Web site at http://apps.nccd.cdc.gov/DDTSTRS/default.aspx.

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