Measurement
|
Group
|
P value (t-test)
|
RM ANOVA
|
Mixed model analysis with interaction a,b
|
---|
Intervention, Mean ± SD
|
Placebo, Mean ± SD
| |
Parameter
|
P value
|
Parameter
|
Estimate
|
P value
|
---|
Baseline pain
|
6.86 ± 1.60
|
6.25 ± 1.61
|
0.111
|
Time
|
0.001
|
Intercept
|
5.527
|
.000
|
Pain after 4 weeks
|
5.22 ± 1.70
|
5.69 ± 1.52
|
0.221
|
Group
|
0.001
|
Baseline pain
|
0.733
|
.000
|
Pain after 6 weeks
|
4.52 ± 1.78
|
5.66 ± 1.65
|
0.006
|
Group×time
|
0.001
|
Time
|
−0.494
|
.080
|
Intervention group
|
−1.133
|
.006
|
Baseline pain ×group
|
−.712
|
.002
|
Baseline pain×time
|
−0.018
|
.233
|
- a. Control group is set as the reference group
- b. Dependent Variable: Pain