Table 4.
Comparison of Beckman stages graded on colour with presence of hard drusen, soft drusen or hyperpigmentation on UWF
| Beckman classification | Number at risk | Centre % (95% CI) | Mid % (95% CI) | Far % (95% CI) | |
| Hard drusen | 0 | 4131 | 58.4 (56.8 to 60.0) | 86.0 (84.9 to 87.2) | 75.8 (74.3 to 77.2) |
| 1 | 836 | 67.5 (64.0 to 70.8) | 88.2 (85.7 to 90.3) | 78.1 (75.1 to 80.9) | |
| 2 | 545 | 68.6 (64.4 to 72.6) | 90.3 (87.2 to 92.9) | 85.0 (81.5 to 88.0) | |
| 3 | 277 | 69.7 (63.9 to 75.1) | 88.1 (83.4 to 91.8) | 79.1 (73.0 to 84.3) | |
| 4 | 31 | 54.8 (32.8 to 75.5) | 71.0 (50.3 to 86.8) | 67.7 (48.0 to 83.7) | |
| Ungradable | 318 | 57.2 (51.5 to 62.8) | 83.3 (78.7 to 87.3) | 63.2 (57.1 to 69.0) | |
| Soft drusen | 0 | 4131 | 1.5 (1.1 to 1.9) | 1.9 (1.5 to 2.5) | 2.9 (2.3 to 3.5) |
| 1 | 836 | 2.9 (1.8 to 4.4) | 2.8 (1.8 to 4.1) | 4.7 (3.2 to 6.5) | |
| 2 | 545 | 11.6 (8.7 to 15.0) | 5.3 (3.5 to 7.8) | 7.0 (4.8 to 9.8) | |
| 3 | 277 | 28.5 (22.3 to 35.4) | 6.5 (3.7 to 10.4) | 4.3 (1.9 to 8.3) | |
| 4 | 31 | 38.7 (18.8 to 61.9) | 25.8 (9.3 to 49.7) | 25.8 (9.3 to 49.7) | |
| Ungradable | 318 | 6.3 (3.7 to 9.9) | 2.5 (1.0 to 5.3) | 1.9 (0.7 to 4.1) | |
| Hyperpigmentation | 0 | 4131 | 1.0 (0.7 to 1.4) | 5.5 (4.7 to 6.4) | 9.0 (8.0 to 10.1) |
| 1 | 836 | 0.6 (0.2 to 1.4) | 5.9 (4.3 to 7.8) | 8.0 (6.1 to 10.3) | |
| 2 | 545 | 2.0 (0.9 to 3.8) | 9.0 (6.4 to 12.2) | 12.3 (9.3 to 15.8) | |
| 3 | 277 | 9.0 (5.7 to 13.5) | 9.0 (5.6 to 13.5) | 13.7 (9.6 to 18.8) | |
| 4 | 31 | 16.1 (5.3 to 34.1) | 16.1 (5.0 to 35.0) | 19.4 (6.9 to 38.9) | |
| Ungradable | 318 | 0.9 (0.2 to 2.7) | 5.7 (3.3 to 9.0) | 9.4 (6.3 to 13.4) |
UWF, ultrawide field.