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. 2004 Dec;19(12):1175–1180. doi: 10.1111/j.1525-1497.2004.40178.x

Table 2.

Incidence of Diabetes in Patients Based on Baseline Screening HbA1c

HbA1c Category Incidence per 100 Person-years (95% CI)
Normal ( 5.5%) 0.8 (0.4 to 1.2)
High-normal (5.6% to 6.0%) 2.5 (1.6 to 3.5)
Elevated (6.1% to 6.9%) 7.8 (5.2 to 10.4)

P < .0001 for difference between groups.

CI, confidence interval.