Table 7 Levels of evidence for the overall quality of the measurement property [18–21]
From: Measurement properties of tools measuring mental health knowledge: a systematic review
Level | Rating | Criteria |
|---|---|---|
Strong | +++ or --- | Consistent findings in multiple studies of good methodological quality OR in one study of excellent methodological quality |
Moderate | ++ or - | Consistent findings in multiple studies of fair methodological quality OR in one study of good methodological quality |
Limited | + or – | One study of fair methodological quality |
Conflicting | +/− | Conflicting findings |
Unknown | x | Studies of poor methodological quality and studies with indeterminate quality of measurement properties |