Table 7.
Construct Validity
| Correlation between MHQ summary score and listed measure* | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| First Author | Year | Sample | Patient-reported improvement | DFI | HFDS | Grip Strength | Key Pinch | 2-point Pinch | 3-jaw Pinch | Jebsen-Taylor Test |
| van der Giesen | 2008 | Patients with rheumatoid arthritis | 0.64 | |||||||
| Poole | 2010 | Patients aged 45+ with diagnosed osteoarthritis | −0.86 | −0.82 | ||||||
| Poole | 2010 | Patients with type II diabetes and hand sensory or motor impairment | −0.72 | −0.76 | ||||||
| Waljee | 2010 | Patients with rheumatoid arthritis | 0.34 | 0.26 | 0.33 | 0.37 | −0.46 | |||
*
Spearman’s correlation coefficient; values from 0.5–1 (both negative and positive) are considered large correlations.
MHQ: Michigan Hand Outcomes Questionnaire; DFI: Dreiser’s Functional Hand Index; HFDS: Hand Function Disability Scale