Figure 2

A–G: results of the mixed model analysis for pain, impairment and Roland-Morris disability scores. When corrected for baseline values, there is a significant effect of the intervention on the RMDQ score and on the NRS scores for back pain and self-perceived impairment (the curve for the intervention group ‘lies below’ the curve for the control group). The effects are statistically significant but too small to be considered clinically relevant. Differences between groups remain constant over the entire study period (the two curves are parallel).