Table 3

Predicted prevalence of elevated A1C among adults aged ≥18 years with and without iron deficiency

Predicted prevalence of women with an A1C ≥5.5%*Difference in predicted prevalence of A1C ≥5.5% between iron-deficient and iron-sufficient womenPredicted percentage of men with an A1C ≥5.5%*Difference in predicted prevalence of A1C ≥5.5% between iron-deficient and iron-sufficient men
Iron-deficientIron-sufficientIron-deficientIron-sufficient
n1,1505,516753,794
Unadjusted26.4 ± 1.823.5 ± 0.92.8 ± 1.945.3 ± 7.526.2 ± 1.319.1 ± 7.6
Adjusted for age, race/ethnicity29.4 ± 1.823.1 ± 0.96.3 ± 1.839.5 ± 9.226.2 ± 1.313.2 ± 9.3
Adjusted for above, and waist circumference27.9 ± 1.723.1 ± 0.94.8 ± 1.731.8 ± 6.026.1 ± 1.35.7 ± 6.2
Adjusted for above, and parity, hysterectomy27.4 ± 1.723.3 ± 1.04.1 ± 1.7
Predicted prevalence of women with an A1C ≥6.5%Difference in predicted prevalence of A1C ≥6.5% between iron-deficient and iron-sufficient women
Iron-deficientIron-sufficient
n1,1505,516
Unadjusted1.1 ± 0.41.3 ± 0.20.2 ± 0.4
Adjusted for age, race/ethnicity1.1 ± 0.41.3 ± 0.20.1 ± 0.4
Adjusted for above and waist circumference1.0 ± 0.41.3 ± 0.20.3 ± 0.4
Adjusted for above and parity, hysterectomy1.0 ± 0.41.3 ± 0.20.3 ± 0.4
  • Data are % ± SE.

  • *316 female participants with iron deficiency and 1,478 without iron deficiency had a measured A1C ≥5.5%, 13 male participants with iron deficiency and 1,178 without iron deficiency had a measured A1C ≥5.5%.

  • P < 0.05.

  • ‡32 female participants with iron deficiency and 102 without iron deficiency had a measured A1C ≥ 6.5%.