Table 1 —

Development of retinopathy in type 1 diabetic patients from the DCCT primary cohort with good and poor metabolic control

Metabolic control*Three-step retinopathy
AbsentChangeSustainedSNPDR
Good (n = 153)13815 00
 HbA1c ≤6.87%90.2% 9.80%0%  0%  
Poor (n = 166) 7138543
 HbA1c ≥9.49%42.8%22.9% 32.5%1.8%
  • Data are n or %.

  • *

    * OR 12.3 (95% CI 6.83–23.5).