- Presenting p-values from regression analyses using mixed effect models
- Model 1: Model included the variables Group, Time and Group x Time
- Model 1 with confounder: Confounders were added separately to Model 1. Confounding variables with p-values < 0.2 were carried forward to the final model
- Model 2: Final model, adjusted for confounders (sex, pain intensity and physical function)
- Group: PT group resp. physician group
- Time: Measurements at baseline, 3-, 6- and 12-month follow-ups
- Group x Time: Statistical interaction of group and time
- aBody Mass Index
- bEducational level, dichotomized variables - primary and secondary or tertiary school
- cPain intensity, VAS 0–100
- dPhysical function, 30-s Chair Stand Test
- *Statistically significant, p < 0.05