The Scale of Scales
| Grades | Description |
|---|---|
| I | Clinically relevant, reliable, and valid |
| II | Clinically relevant but not yet validated or shown to be reliable |
| III | Valid and reliable, but not clinically relevant |
| IV | Clinically relevant but shown to be invalid or unreliable |
| V | Not clinically relevant, not simple to remember and use, and not validated |
| Subgrades | |
| a | Easy to remember and/or use |
| b | Not easy to remember and/or use |