213 Training for supervisors to guide employees with a work disability show that, although not statistically significant, there is a tendency of a decrease in the number of employees being employed being larger in the control group than in the intervention group. However, differences between the intervention and control group could also be due to sampling variability, as the results in figure 2 show that for being employed (≥1 hour/month) only a statistically significant difference was found after 8 months (betas reported in the supplementary file 1). For being employed 12 hours per week the same results were found, which is shown in figure 3. For being employed for 3 consecutive months (≥1 hour/month) no significant differences were found at any point in time, which is shown in figure 4. Moreover, figure 2-4 also show that the outcomes on employment were relatively stable in the intervention group and relatively erratic in the control group. For the outcome measure having a temporary contract, the proportion of employees with a temporary contract decreased in the intervention and control group, but no significant differences between groups were found. Regarding the number of hours employees work per week, the results in table 4 show that after 6 months the intervention group works significantly more hours than the control group (β=1.70; CI=0.29-3.11). However, after 12 months these differences attenuated (β=0.11; CI=- 1.36-1.59). The results for wage per hour increase in both the intervention and control group, but differences were not significant. Table 4. Difference-in-Difference analysis outcome measures employees at the end of the training (T1), 3 (T2), 6 (T3), 9 (T4) and 12 months (T5) after the end of the training Primary and secondary outcome measures employees N intervention N control Mean (SD)/% intervention Mean (SD)/% control β 95%-CI Pvalue Employed≥1 hours/ month T1 T2 T3 T4 T5 73 73 73 73 73 1526 1526 1526 1526 1526 100% 97% 97% 97% 96% 100% 96% 94% 93% 95% 0.05 0.07 0.08 0.01 -0.07 to 0.16 -0.04 to 0.18 -0.02 to 0.18 -0.08 to 0.10 0.437 0.202 0.130 0.834 7
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