Prevalence of diabetic retinopathy grades (0–3) in the whole population studied as well as by type of diabetes
| Grade 0 | Grade 1 | Grade 2 | Grade 3 | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No | % | No | % | No | % | No | % | No | % | ||||||||||
| NIDDM | 228 | 45.6 | 116 | 23.2 | 16 | 3.2 | 44 | 08.8 | 404 | 80.8 | |||||||||
| IDDM | 60 | 12.0 | 12 | 02.4 | 4 | 0.8 | 20 | 04.0 | 96 | 19.2 | |||||||||
| Total | 288 | 57.6 | 128 | 25.6 | 20 | 4.0 | 64 | 12.8 | 500 | 100.0 | |||||||||