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The interrater reliability for antenatal hydronephrosis diagnosis of 50 anteroposterior renal pelvis diameter measurements.
| Hydronephrosis (observer 1) | Total | |||||
|---|---|---|---|---|---|---|
| Absent | Mild | Moderate | Severe | |||
| Hydronephrosis (observer 2) | Absent | 6 | 5 | 0 | 0 | 11 |
| Mild | 6 | 9 | 1 | 0 | 16 | |
| Moderate | 1 | 4 | 9 | 0 | 14 | |
| Severe | 0 | 0 | 1 | 8 | 9 | |
|
| ||||||
| Total | 13 | 18 | 11 | 8 | 50 | |
Linear weighting Cohen's Kappa: 0.51 (0.33 to 0.69).
