Measurement | Time path | ||||
---|---|---|---|---|---|
 | Baseline | 3 months | 6 months | 9 months | 12 months |
 | (T0) | (T1) | (T2) | (T3) | (T4) |
Prognostic measures | Â | Â | Â | Â | Â |
- Demographic variables (e.g. age, gender) | X | Â | Â | Â | Â |
- Last work (function, hours) | X | Â | Â | Â | Â |
- Work status before reporting sick | X | Â | Â | Â | Â |
Primary outcome measure | Â | Â | Â | Â | Â |
- Duration of sickness benefit | X | X | X | X | X |
Secondary outcome measures | Â | Â | Â | Â | Â |
- RTW | X | X | X | X | X |
- Total number of days of sickness benefit | X | X | X | X | X |
- Severity of complaints (DMQ) | X | X | X | Â | X |
- Pain intensity (Von Korff) | X | X | X | Â | X |
- Functional status (RAND-36) | X | X | X | Â | X |
- General health (RAND-36) | X | X | X | Â | X |
- Quality of life (Euroqol EQ-5D) | X | X | X | Â | X |
- Coping (PCI) | X | Â | Â | Â | Â |
- ASE determinants (ASE questionnaire) | X | X | Â | Â | Â |
- Direct and indirect costs | Â | Â | Â | Â | X |
- Patient satisfaction (PSOHSQ)* | Â | X | Â | Â | Â |