Table 3 Mixed linear models analysis comparing the outcome of LBP intensity (measured on a scale from 0 to 10) between the DK and the UK cohorts
Beta-coefficient | p-value | Beta-coefficient | p-value | |
|---|---|---|---|---|
unadjusted model | adjusted model* | |||
Baseline LBP intensity (ref.: DK) | ||||
UK | -.5 (−.7;−.2) | <.001 | −1.4 (−1.9;−.8) | <.001 |
Week (ref.: week 0) | <.001 | <.001 | ||
3 | −3.7 (−3.9;−3.5) | −3.7 (−3.9;−3.6) | ||
5 | −4.4 (−4.6;−4.2) | −4.4 (−4.6;−4.2) | ||
12 | −5.1 (−5.3;−5.0) | −5.1 (−5.3;−5.0) | ||
26 | −5.4 (−5.6;−5.2) | −5.4 (−5.6;−5.2) | ||
Country#Week (ref.: DK week 1) | <.001 | <.001 | ||
UK week 3 | .1 (−.3; .6) | .2 (−.2; .6) | ||
UK week 5 | 1.6 (.9; 2.3) | 2.1 (1.4; 2.7) | ||
UK week 12 | 1.0 (.6; 1.3) | 1.0 (.6; 1.3) | ||
UK week 26 | 1.2 (.8; 1.6) | 1.2 (.8; 1.6) | ||
LBP (0–10) (ref: DK) | .3 (.3; .4) | <.001 | ||
LBP#UK | .2 (.1; .3) | <.001 | ||
Episode duration (ref. <2 weeks) | <.001 | |||
2 weeks–3 months | .5 (.3; .7) | |||
More than 3 months | .8 (.6; 1.1) | |||
Country#Duration (ref. DK <2 weeks) | ||||
UK 2 weeks–3 months | -.5 (−.8; −.1) | <.01 | ||
UK More than 3 months | -.5 (−.9;-.03) | |||