Table 4.
Association of baseline treatment expectations and preferences with change in WOMAC pain score and OMERACT-OARSI responder at follow-up: matched for both participant and physiotherapist.
| Change in WOMAC pain at 6 months |
Change in WOMAC pain at 12 months |
|||
|---|---|---|---|---|
| Unadjusted mean difference (95% CI) | Adjusteda mean difference (95% CI) | Unadjusted mean difference (95% CI) | Adjusteda mean difference (95% CI) | |
| Matched patient and therapist treatment preferences | ||||
| Yes cf. nob | −0.57 (−1.75, 0.62) | −0.92 (−2.07, 0.23) | −0.27 (−1.62, 1.08) | −0.71 (−2.00, 0.59) |
| Matched patient and therapist treatment expectationsc | ||||
| Yes cf. nob | 1.21 (0.32, 2.10) | 0.82 (−0.05, 1.69) | 1.33 (0.33, 2.34) | 0.92 (−0.05, 1.89) |
| Treatment responder at 6 months |
Treatment responder at 12 months |
|||
| Unadjusted odds ratio (95% CI) |
Adjusteda odds ratio (95% CI) |
Unadjusted odds ratio (95% CI) |
Adjusteda odds ratio (95% CI) |
|
| Matched patient and therapist treatment preferences | ||||
| Yes cf. Nod | 0.92 (0.50, 1.70) | 0.88 (0.46, 1.68) | 0.77 (0.41, 1.45) | 0.70 (0.36, 1.38) |
| Matched patient and therapist treatment expectationsc | ||||
| Yes cf. nod | 1.58 (0.99, 2.52) | 1.40 (0.86, 2.28) | 1.62 (1.00, 2.62) | 1.52 (0.91, 2.53) |
a
Adjusted for baseline WOMAC pain, age, gender, duration of knee problems, and randomised treatment group.
b
Compared to a change of 0 in the not matched group.
c
Using cut-offs (at median) to define high/low treatment expectations.
d
Compared to an odds ratio of 1 in the comparison group.