Preventability scores based in all reviews and at the patient level
| Preventability rating | Number of reviews given rating (n=2411) | Number of deaths given rating (n=1052)* |
|---|---|---|
| 1–Not preventable | 1759 (72.9%) | 577 (54.8%) |
| 2–Not preventable | 549 (22.8%) | 399 (37.9%) |
| 3–Not preventable, error present | 35 (1.5%) | 26 (2.5%) |
| 4–Possibly preventable, error present | 57 (2.4%) | 40 (3.8%) |
| 5–Likely preventable, error present | 11 (0.5%) | 10 (0.95%) |
*When there were multiple reviews on one patient, we used the highest score. Eighty reviews and six deaths did not receive a preventability rating before it was a mandatory question on the review.