Outcomes | Time measured | Follow-up | |||||||
---|---|---|---|---|---|---|---|---|---|
 | Baseline | Midterm | Discharge | 2 months | 4 months | 6 months | 8 months | 10 months | 12 months |
 | T0 | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 |
Descriptive variables | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Demographic variables | x |  |  |  |  |  |  |  |  |
 General perceived health | x |  |  |  |  |  |  |  |  |
 Work-related psychosocial factors | x |  |  |  |  |  |  |  |  |
 Self-efficacy of work participation | x |  |  |  |  |  |  |  |  |
 Pain intensity | x |  | x |  |  |  |  |  |  |
 Fatigue | x |  |  |  |  |  |  |  |  |
 Work tolerance functions | x |  |  |  |  |  |  |  |  |
Outcome measures | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Primary | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Work participationa | x | x | x | x | x | x | x | x | x |
Secondary | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Work ability | x |  | x |  |  | x |  |  | x |
 Disability | x |  | x |  |  | x |  |  | x |
 Physical functioning | x |  | x |  |  | x |  |  | x |
 Quality of life | x |  | x |  |  | x |  |  | x |
Costsa | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Presenteeism | x | x | x | x | x | x | x | x | x |
 Health care usage | x |  | x |  | x |  | x |  | x |