Table 6 Regression models for supplementary analysis
Supplementary analyses (primary outcome at primary endpoint) | ||
|---|---|---|
| Â | Dependent variable (y) | Independent variable (x) |
Linear regression model | Change in isometric knee-extensor strength Δt0-t1 | Exercise adherence  Seconds of total time-under-tension (TUT)  Number of completed exercise sessions |
Supplementary analyses (secondary outcomes at primary and secondary endpoints) | ||
Linear regression models | Change in isometric knee-extensor strength Δt0-t2, Δt0-t3 | Exercise adherence  Seconds of total time-under-tension (TUT)  Number of completed exercise sessions |
Change in 6-minute walk test for distance (6MWT) Δt0-t1, t0-t2, t0-t3 | ||
Change in stair climb test (SCT) Δt0-t1, t0-t2, t0-t3 | ||
Change in Knee Osteoarthritis Outcome Score (KOOS) subscales Δ t0-t1, t0-t3 | ||
Change in Oxford Knee Score (OKS) Δ t0-t1, t0-t3 | ||
Change in current knee pain (Numeric Rating Scale, NRS) Δ t0-t1, t0-t2, t0-t3 | ||
Change in knee pain during the last week (Numeric Rating Scale, NRS) Δ t0-t1, t0-t3 | ||
Need for surgery (yes/don’t know/no) | ||
Averse events | ||