Table 2 Fixed effects parameter estimates from the linear mixed-effects regression model, with leg pain intensity during the study time span (1 year) as outcome (N = 97). No centring or standardization of coefficients. Robust SE estimates

0.862

0.348

1.375

0.262

3.290

0.001

− 0.019

− 0.034

− 0.004

0.008

− 2.490

0.013

− 0.006

− 0.022

0.009

0.008

− 0.800

0.421

− 2.701

− 3.470

− 1.931

0.393

− 6.880

< 0.001

1.092

0.082

2.101

0.515

2.120

0.034

0.017

0.001

0.032

0.008

2.130

0.033

− 0.010

− 0.058

0.038

0.025

− 0.400

0.689

0.151

− 0.852

1.153

0.512

0.290

0.768