Table 3. The presence and severity of diabetic retinopathy in the Beijing Desheng Diabetic Eye Study.
| Grading of DR | Subjects | Subjects by diabetic duration (y) |
||
| 0-4 | 5-14 | ≥15 | ||
| NDR | 929 (64.6) | 398 (79.6) | 425 (63.4) | 106 (39.6) |
| Any DR | 509 (35.4) | 102 (20.4) | 245 (36.6) | 162 (60.4) |
| Mild NPDR | 399 (27.7) | 93 (18.6) | 206 (30.7) | 100 (37.3) |
| Moderate NPDR | 38 (2.6) | 4 (0.8) | 15 (2.2) | 19 (7.1) |
| Severe NPDR | 7 (0.5) | 1 (0.2) | 3 (0.4) | 3 (1.1) |
| PDR | 65 (4.5) | 4 (0.8) | 21 (3.1) | 40 (14.9) |
| Total | 1438 (100) | 500 (100) | 670 (100) | 268 (100) |
DR: Diabetic retinopathy; NDR: No diabetic retinopathy; NPDR: Non-proliferative diabetic retinopathy; PDR: Proliferative diabetic retinopathy.
n (%)