OBJECTIVE:

To estimate how many U.S. adults with diabetes would be eligible for individualized A1C targets based on 1) the 2012 American Diabetes Association (ADA) guideline and 2) a published approach for individualized target ranges.

RESEARCH DESIGN AND METHODS:

We studied adults with diabetes ≥20 years of age from the National Health and Nutrition Examination Survey 2007-2008 (n = 757). We assigned A1C targets based on duration, age, diabetes-related complications, and comorbid conditions according to 1) the ADA guideline and 2) a strategy by Ismail-Beigi focused on setting target ranges. We estimated the number and proportion of adults with each A1C target and compared individualized targets to measured levels.

RESULTS:

Using ADA guideline recommendations, 31% (95% CI 27-34%) of the U.S. adult diabetes population would have recommended A1C targets of <7.0%, and 69% (95% CI 66-73%) would have A1C targets less stringent than <7.0%. Using the Ismail-Beigi strategy, 56% (51-61%) would have an A1C target of ≤7.0%, and 44% (39-49%) would have A1C targets less stringent than <7.0%. If a universal A1C <7.0% target were applied, 47% (41-54%) of adults with diabetes would have inadequate glycemic control; this proportion declined to 30% (26-36%) with the ADA guideline and 31% (27-36%) with the Ismail-Beigi strategy.

CONCLUSIONS:

Using individualized glycemic targets, about half of U.S. adults with diabetes would have recommended A1C targets of ≥7.0% but one-third would still be considered inadequately controlled. Diabetes research and performance measurement goals will need to be revised in order to encourage the individualization of glycemic targets.