Results
Descriptive statistics for the intervention group and the control group (TAU) in gross and net days are presented in Table 
Comparisons of registered sick leave days between the intervention group and TAUMann–Whitney Test, sd = standard deviation, Q1;Q3 = first and third quartileWhen looking at net days (i.e. the number of sick leave days converted into whole days), the advantage of the control group was further strengthened. At three months after inclusion, the control group had a median of 20 sick-leave days less than the intervention group (