Validity checklist results for each outcome measure
| Name of outcome | Content validity | Internal consistency | Criterion validity | Construct validity | Reproducibility (agreement) | Reproducibility (reliability) | Responsiveness | Floor/ceiling effect | Interpretability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ATRS | + | Clear description of measurement aim, target population and experts were involved in item selection and development | + | Factor analysis and Chronbach's α calculated | ? | Correlation analysis demonstrated with another outcome measure. Doubt regarding appropriate ‘gold standard’ | + | Presented hypothesis and results for the extent to which the new outcome was consistent with another outcome | + | Data presented and discussed regarding measurement error and minimally important change. | + | Evaluated the extent to which patients could be distinguished from each other | + | Effect sizes were presented. | 0 | No Information available | ? | Mean and standard deviation of scores presented, but not for different sub-groups. | |
| Leppilahti Score | − | Item selection developed by experts only | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | |
| AOFAS | − | Item selection developed by experts only | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | |
| Olerud Molander Ankle Score | − | Target population, ankle fractures, items developed by experts only | 0 | No Information available | ? | Insufficient information regarding method of correlation analysis presented and ‘gold standard’ | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | 0 | No Information available | + | Different patient subgroups presented | |
+, positive rating.
?, intermediate rating.
−, negative rating.
0, no information available.
AOFAS, American Orthopaedic Foot and Ankle Society; ATRS, Achilles tendon Total Rupture Score.