Table 6.
Current state of validation of the skin assessment instruments by OMERACT filter
| Skin assessment instruments | Face and content validity | Criterion validity | Construct validity | Discrimination | Responsiveness | Reliability | Feasibility |
|---|---|---|---|---|---|---|---|
| mRSSa | + | + | + | + | + | + | + |
| Durometry | + | + | + | ± | + | + | ± |
| Plicometry | + | ± | − | + | ± | ± | ± |
| Cutometry | + | + | − | + | − | + | ± |
| US | + | + | + | + | − | + | ± |
| Histology | + | + | + | + | + | ± | − |
| Self-assessment questionnaire | + | + | + | ± | − | + | + |
| Maximal oral aperture | + | − | + | + | ± | − | ± |
a
A teaching video course of the mRSS assessment (provided by D.E.F.) is available
http://video.edraspa.it/PublishingPoint/eustar.org/100kbps_part_2.wmv). mRSS: modified Rodnan skin score; +: fulfilling the criteria; −: there are no data or there are negative results; ±: there are not enough data or there is a remarkable difference between methods.