Objectives: Evaluate whether increased diabetes screening in youth is associated with lower HbA1c at T2D diagnosis and improved HbA1c outcomes in youth.
Research design and methods: Diabetes screening rates from 2009 to 2018 were calculated. Electronic medical records identified obese youth ages 8-18 with first HbA1c ≥6.5% from 2009 to 2018; chart review confirmed incident T2D. Demographics, BMI and HbA1c values, and use of glucometer and diabetes medications were collected.
Results: 142 youth had T2D. Median age was 14 years (range 8-18); 58% were female. 46% were identified on first HbA1c testing. 69 (49%) had 1st HbA1c 6.5%-6.9%, 43 (30%) 7.0%-7.9%, and 30 (21%) ≥8%. Follow-up from 1st to last HbA1c was median 2.6 years (range 0-10). 121 youth had follow-up testing ≥1 year after diagnosis; of these, 87 (72%) had persistent T2D-range HbA1c or were taking diabetes medications. 85% of youth with 1st HbA1c ≥7% had persistent T2D versus 52% of those with 1st HbA1c <7% (p < 0.001). Poorly controlled diabetes at last test was present in 19% of youth with baseline HbA1c 6.5%-6.9%, 30% with 7.0%-7.9%, and 63% with ≥8% (p < 0.001). 47 (68%) with HbA1c <7% were prescribed a glucometer; 9% of youth prescribed a meter and 41% of youth not prescribed a meter had poorly controlled diabetes at last test (p = 0.009).
Conclusions: Youth with HbA1c <7% at diagnosis were less likely to have poorly controlled diabetes at follow-up. Prescription of glucometers for youth with HbA1c in this range was associated with improved HbA1c outcomes and deserves further study including components of glucometer teaching.
Keywords: glucometer; incidence; screening; type 2 diabetes; youth.
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