Table 4.
Screening performance measures along with 95% confidence limits for each centre and for all three centres combined
| Final human grade | Percentage classified as test-positive (including technical failure) by EyeArt (95% CI)* | |||
|---|---|---|---|---|
| NEL | GS | SEL | Combined | |
| R0M0 | 31.9 (30.8, 33.0) | 28.8 (27.7, 29.9) | 35.4 (34.3, 36.4) | 32.1 (31.5, 32.7) |
| R1M0 | 91.8 (90.6, 92.9) | 83.7 (82.2, 85.1) | 93.3 (92.1, 94.3) | 89.1 (88.4, 89.9) |
| R1M1 | 98.9 (97.1, 99.6) | 97.2 (94.5, 98.6) | 98.6 (96.6, 99.4) | 98.3 (97.3, 98.9) |
| R2* | 100.0 (97.1, 100.0) | 100.0 (92.9, 100.0) | 100.0 (96.8, 100.0) | 100.0 (98.7, 100.0) |
| R2M0 | 100.0 (90.7, 100.0) | 100.0 (85.8, 100.0) | 100.0 (88.8, 100.0) | 100.0 (96.1, 100.0) |
| R2M1 | 100.0 (95.9, 100.0) | 100.0 (86.8, 100.0) | 100.0 (95.6, 100.0) | 100.0 (98.1, 100.0) |
| R3* | 100.0 (93.7, 100.0) | 100.0 (92.7, 100.0) | 100.0 (94.6, 100.0) | 100.0 (97.9, 100.0) |
| R3M0 | 100.0 (87.7, 100.0) | 100.0 (85.2, 100.0) | 100.0 (83.2, 100.0) | 100.0 (94.9, 100.0) |
| R3M1 | 100.0 (88.1, 100.0) | 100.0 (86.8, 100.0) | 100.0 (92.3, 100.0) | 100.0 (96.4, 100.0) |
| U | 90.4 (86.5, 93.3) | 88.6 (83.2, 92.4) | 88.9 (84.3, 92.3) | 89.4 (87.0, 91.5) |
*95% CIs are binomial exact.
Retinopathy grades: No retinopathy (R0); mild-to-moderate non-proliferative retinopathy (R1); non-referable maculopathy (M0); ungradable images (U); referable maculopathy (M1), moderate-to-severe non-proliferative retinopathy (R2) and proliferative retinopathy (R3).8 9
GS, Gloucestershire; NEL, North East London; SEL, South East London.