Categorisation of patient perceived potentially harmful preventable problems occurring in the last 12 months following review by clinicians and members of the public
| Group label | Threshold criteria | Clinician scores n=132 | Members of the public scores n=132 |
| 1. Higher threshold | Median score of ‘very likely or certain’ or ‘probably’ or at least one score of ‘very likely or certain’ | 18 (14%) | 87 (66%) |
| 2. Lower threshold | Median score of ‘possibly’ or at least one score of ‘probably’ or higher | 71 (54%) | 104 (79%) |
| 3. Any possibility | At least one score of ‘unlikely’ or higher | 106 (80%) | 109 (83%) |
| 4. No problem | All scores ‘definitely not’ or not coded | 1 (1%) | 0 |
| 5. Not coded | Insufficient information for coding by all coders | 25 (19%) | 23 (17%) |