Study Finds Half of U.S. Adults Have Diabetes or Prediabetes
Recently, researchers set out to quantify just how prevalent the disease and its precursor are among American adults. In a large population-based study(jama.jamanetwork.com) published Sept. 8 in JAMA: the Journal of the American Medical Association, authors examined the prevalence of diabetes and prediabetes and related disease trends in U.S. adults from 1988-2012.
One of the most startling findings in this study was that in 2012, more than half of American adults had either diabetes or prediabetes. Also of interest was the fact that more than one-third of those who met the study's criteria for diabetes were unaware they had the disease.
Breakdown of Study Methods
The study used data collected as part of the 1988-94 and the 1999-2000 to 2011-12 National Health and Nutrition Examination Surveys (NHANES), which are designed to be nationally representative of the civilian, noninstitutionalized U.S. population. Specifically, researchers used data from 2,781 adults from 2011-12 to estimate recent prevalence and an additional 23,634 adults from all NHANES conducted between 1988 and 2010 to estimate trends.
Furthermore, the researchers used two definitions of undiagnosed and total diabetes to bolster the reliability of their results. The first of these defined undiagnosed diabetes as any participant who had
a hemoglobin A1c level of 6.5 percent or greater,
a fasting plasma glucose (FPG) level of 126 mg/dL or greater, or
a two-hour plasma glucose (2-hour PG) level of 200 mg/dL or greater (i.e., the hemoglobin A1c, FPG or 2-hour PG definition).
Total diabetes was defined as any part Continue reading