Table 1.
Positive predictive values, primary diagnoses
| Recorded diagnoses from NPR | Confirmed diagnoses | |||||
|---|---|---|---|---|---|---|
| Total | HS | SAH | SDH | Unspecified hemorrhage | Nonstroke events | |
| Inhospital | ||||||
| HS | 545 (100) | 528 (96.9) | 1 (0.2) | 3 (0.6) | — | 13 (2.3) |
| SAH | 171 (100) | 3 (1.8) | 163 (95.3) | — | — | 5 (2.9) |
| SDH | 341 (100) | 2 (0.6) | 1 (0.3) | 334 (97.9) | — | 4 (1.2) |
| Unspecified hemorrhage | 7 (100) | — | — | — | 6 (85.7) | 1 (14.3) |
| Total | 1064 | 533 | 165 | 337 | 6 | 23 |
| Outpatient | ||||||
| HS | 16 (100) | 7 (43.8) | — | — | — | 9 (56.3) |
| SAH | 21 (100) | — | — | — | — | 21 (100) |
| SDH | 40 (100) | — | — | 34 (85.0) | — | 6 (15.0) |
| Unspecified hemorrhage | 4 (100) | — | — | — | 1 (25.0) | 3 (75.0) |
| Total | 81 | 7 | — | 34 | 1 | 39 |
NPR, Norwegian Patient Registry; HS, hemorrhagic stroke; SAH, subarachnoid hemorrhage; SDH, subdural hemorrhage.