text_1: HbA1c consistently overestimates glycemic control in black individuals with Sickle cell trait (SCT).
text_2: In unadjusted GEE analyses, for a given fasting glucose, HbA1c values were statistically significantly lower in those with (5.72%) vs those without (6.01%) SCT (mean HbA1c difference, −0.29%; 95% CI, −0.35% to −0.23%).