Physical therapy (PT) and exercise (Ex) v placebo for osteoarthritis of the knee†
| Outcomes at 8 weeks | PT + Ex (baseline) | Placebo (baseline) | Difference in mean change from baseline (95% CI) |
|---|---|---|---|
| Mean WOMAC score (mm) | 462 (1047) | 934 (1094) | 425 (189 to 661) |
| Mean 6-min walking distance (m) | 487 (431) | 410 (403) | 49 (19 to 79) |
| Outcome at 1 y | RRR (CI) | NNT (CI) | ||
|---|---|---|---|---|
| †WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index. Other abbreviations defined in glossary; RRR, NNT, and CI calculated from data provided by author. | ||||
| Knee surgery | 5% | 20% | 76% (6 to 94) | 7 (4 to 134) |