Table 2.

Prevalence and cumulative incidence of DR by fundoscopy for risk groups based on 1h-PG and 2h-PG cutoffs for normal glucose tolerance, IGT, and type 2 diabetes

Retinopathy	Normal glucose tolerance (%)	IGT (%)*	Type 2 diabetes (%)†
Prevalence, any retinopathy (n = 2,895)
1h-PG	0.9	3.1	8.6
2h-PG	0.7	2.0	9.8
15-year c.i., any retinopathy (n = 1,703)
1h-PG	2.4	9.4	40.2
2h-PG	2.5	9.1	40.0
25-year c.i., severe retinopathy (n = 1,703)
1h-PG	1.9	7.0	34.7
2h-PG	2.1	5.6	34.6

c.i., cumulative incidence.

*IGT cutoffs for 1h-PG were ≥173 and <230 mg/dL, and for 2h-PG were ≥140 and <200 mg/dL.

†Type 2 diabetes cutoff for 1h-PG was ≥230 mg/dL and for 2h-PG was ≥200 mg/dL.