Assessed severity and preventability of patient safety incidents, and percentage agreement between reviewers
| Actual Harm | Avoidability | ||||
| Frequency | % agreement | Frequency | % agreement | ||
| Negligible* | 186 | 45.81 | Definitely preventable* | 215 | 52.96 |
| Minor* | 44 | 10.84 | Probably preventable* | 47 | 11.57 |
| Moderate* | 4 | 0.99 | Probably not preventable* | 1 | 0.25 |
| Major* | 1 | 0.25 | Definitely not preventable* | 0 | 0 |
| Catastrophic* | 0 | 0 | |||
| Total agreement | 58 | Total agreement | 65 | ||
| Negligible, minor, moderate* | 405 | 99.75 | Definitely preventable, probably preventable* | 384 | 94.58 |
| Major, catastrophic* | 1 | 0.25 | Probably not preventable, definitely not preventable* | 1 | 0.25 |
| Total agreement when dichotomised | 100 | Total agreement when dichotomised | 95 | ||
*Figures presented represent those for which there was agreement between reviewers, with the sum therefore not matching the total number of classified PSIs.