Joint Judgment of 2 Readers Regarding Presence of Obstruction Based on Narrative Summaries of Hospitalizations and Patient Visits
| Reader 2 | |||
| Reader 1 | Hydronephrosis present | Hydronephrosis absent | Total |
| Hydronephrosis present | 17 | 19 | 36 |
| Hydronephrosis absent | 6 | 58 | 64 |
| Total | 23 | 77 | 100 |