Table 1—

Distribution of patient characteristics based on HbA1c value

CharacteristicAll patientsHbA1c <7%HbA1c 7–8%HbA1c >8%
n483172115196
Age (years)60 ± 14.662 ± 14.565 ± 12.555 ± 14.5
Sex
 Male37.534.933.042.3
 Female62.565.167.057.7
Race (multiple choices possible)
 White*72.582.272.264.6
 Black7.06.48.76.7
 Other/don’t know20.712.818.224.6
Hispanic ethnicity*28.620.921.739.3
Insurance
 Medicare only (no medication coverage)26.527.933.021.4
 All other73.572.167.078.6
At least three comorbidities64.163.770.460.7
Number of glycemic medications
 012.625.67.04.1
 137.342.434.833.2
 ≥246.226.752.257.7
 Don’t know3.15.26.11.0
Provider reviewing HbA1c is . . .
 Same as provider who ordered it88.286.687.090.3
 The patient’s primary care physician*81.182.683.578.1
Communication problem with patient7.57.07.08.2
  • Data are means ± SD or %.

  • *

    * P < 0.05 (ANOVA or χ2 analysis).