Table 3. Inter-reader agreement on the diagnosis of aggressive posterior retinopathy of prematurity (AP-ROP).
Agreement between individual readers, as well as between readers and the reference standard diagnosis (RSD), was variable.
| Total readings (n) | RSD 5958 | Reader 1 5756 | Reader 2 3533 | Reader 3 3352 | Reader 4 2575 | Reader 5 2277 |
|---|---|---|---|---|---|---|
| RSD | ||||||
| Reader 1 | 0.72 | |||||
| Reader 2 | 0.52 | 0.45 | ||||
| Reader 3 | 0.74 | 0.69 | 0.50 | |||
| Reader 4 | 0.74 | 0.37 | −0.012 | 0.52 | ||
| Reader 5 | 0.16 | 0.16 | 0.15 | 0.16 | −0.0024 | |
| Mean kappa score | 0.54 | 0.50 | 0.32 | 0.52 | 0.32 | 0.12 |
RSD= reference standard diagnosis