Conclusion
This trial compared INT to SAU and MHC. Against our hypothesis, long-term results showed that, INT did not cause improved vocational status, symptom levels, quality of life or self-efficacy compared to SAU at 24-month follow-up. However, compared to SAU, INT showed slightly greater stress symptom reduction at 6-month follow-up and a slightly higher proportion in work at 12-month follow-up. Compared to MHC, INT showed better vocational outcomes at both 12- and 24-month follow up but no effect in terms of self-reported health. INT was only implemented to a fair degree throughout the trial, and further research should be conducted to affirm the effect and feasibility of integrating healthcare with vocational rehabilitation in similar welfare settings.