Table 2. Comparison of Michigan Hand Outcomes Questionnaire (MHQ) Scores for Surgical (SMPA) vs. Non-Surgical Subjects.
| MHQ Scale | Preoperative | 6-Month Postoperative |
1-Year Postoperative |
Adjusted Effect Size* (Baseline) |
Adjusted Effect Size** (Baseline & Covariates) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| SMPA | Non- SMPA |
SMPA | Non- SMPA |
SMPA | Non- SMPA |
Effect Size | p-value | Effect Size | p-value | |
| Function | 36 (22) | 58 (18) | 64 (19) | 59 (21) | 60 (24) | 59 (22) | 15.4 | <.001 | 14.4 | 0.001 |
| ADL | 34 (26) | 60 (24) | 55 (29) | 60 (26) | 55 (31) | 60 (25) | 13.3 | <.001 | 13.2 | 0.001 |
| Work | 41 (22) | 59 (23) | 50 (28) | 63 (28) | 47 (28) | 61 (26) | 0.1 | 0.981 | 1.3 | 0.774 |
| Pain ♣ | 49 (26) | 35 (25) | 35 (25) | 33 (26) | 34 (24) | 35 (26) | 8.3 | 0.033 | 8.2 | 0.063 |
| Aesthetics | 32 (22) | 48 (24) | 71 (22) | 50 (23) | 66 (23) | 52 (23) | 20.5 | <.001 | 21.4 | <.001 |
| Satisfaction | 26 (20) | 48 (25) | 64 (24) | 49 (26) | 61 (27) | 49 (26) | 26.1 | <.001 | 24.1 | <.001 |
| Overall Score | 37 (18) | 56 (18) | 61 (20) | 58 (21) | 59 (22) | 58 (20) | 16.3 | <.001 | 15.6 | <.001 |
Abbreviations: ADL, activities of daily living; SMPA, Silicone Metacarpophalangeal Joint Arthroplasty.
Cell values are means (SD).
*
Mean difference in the response variable (1 year change score) between the SMPA and Non-SMPA group, adjusting for the centered baseline values of the response variable.
**
Mean difference in the response variable (1 year change score) between the SMPA and Non-SMPA group, adjusting for the centered baseline value of the response variable, centered age, centered severity, education (high school and lower versus higher), and gender.
♣
Higher pain scores correspond to greater pain.