Psychometric properties derived from a concurrent comparison of 5 measures of at-work productivity loss in persons with inflammatory arthritis and osteoarthritis14.
| Instrument and Key Reference | OMERACT Truth | OMERACT Discrimination | OMERACT Feasibility | ||
|---|---|---|---|---|---|
| Face/Content Validity | Construct Validity | Reliability | Responsiveness | ||
| EWPS | + | + | − | + | + |
| SPS6 | + | + | − | + | + |
| WALS29 | + | + | − | + | + |
| RA-WIS | + | + | − | + | + |
| WLQ Index | + | + | − | − | + |
| WLQ-Time management | + | + | − | − | + |
| WLQ-Physical demands | + | − | − | + | + |
| WLQ-Mental-interpersonal | + | + | − | + | + |
| WLQ-Output demands | + | + | − | − | + |
For instrument definitions and details on the OMERACT filter see Table 2.