Threshold ranges for diabetes-specific retinopathy (moderate NPDR or more severe retinopathy) derived from logistic regression models (adjusted for center) of the glycemic measures by continuous distribution and vigintile distribution and ROC curve analysis
| FPG (mmol/l) | 2-h PG (mmol/l) | A1C (%) | |
|---|---|---|---|
| Logistic regression | |||
| Continuous distribution | 6.5–6.9 | No threshold | 6.5–6.9 |
| Vigintile distribution | 6.4–6.8 | 9.8–10.6 | 6.3–6.7 |
| ROC curve analysis | 6.6 | 13.0 | 6.4 |