O8D.3 The effectiveness of vocational rehabilitation on work participation: a propensity score matched analysis using nationwide register data

Introduction Research on the effectiveness of vocational rehabilitation has often focused on small and selected groups of rehabilitees, lacked proper controls, or not captured dynamic changes in work participation. Using rich nationwide data on vocational rehabilitees and their matched controls, we examined long-term changes in work participation before and after vocational rehabilitation to assess its effectiveness. Methods We used representative Finnish register data to examine 2692 recently employed individuals with histories of musculoskeletal- and mental-related work disability who started vocational rehabilitation in 2008–2010 at age 30–55 (intervention group), and 2692 propensity score matched non-rehabilitees who otherwise met the same criteria (control group). Matching was performed based on sociodemographic and work-related factors, work disability diagnosis, and three-year labour market history. We used generalised estimation equations to examine differences in the proportion of time spent at work between periods of three years before and three years after rehabilitation among the intervention and control group and the difference in these differences (DID). Results Among those with 105+days of work disability in the preceding three-year period, vocational rehabilitation resulted in significant percentage point gains in work participation, with the total DID across the disease groups and genders being 9.2 (95% confidence interval 7.3–11.1). The gains tended to actualise immediately after rehabilitation. No gains were observed among those with shorter preceding work disability. Conclusions Vocational rehabilitation after musculoskeletal- and mental-related work disability showed only shorter-term effectiveness on work participation and only among those with longer work disability histories. The effectiveness of alternative and complementary interventions to vocational rehabilitation should be investigated.