| Control group | Intervention group | Intervention versus control |
---|---|---|---|
 | N = 300 | N = 305 | |
 | Mean (SEM) | Mean (SEM) | Mean difference (95% CI) |
Healthcare costs | 1021 (107) | 1016 (92) | −5 (-316;272) |
    Intervention | 0 | 98 (2.4) | 98 (NA) |
    Other | 1021 (107) | 918 (92) | −104 (-414;173) |
Participant costs | 774 (69) | 642 (45) | −132 (-323;27) |
Productivity losses | 2918 (528) | 2189 (340) | −729 (-2008;285) |
Total | 4713 (626) | 3847 (388) | −866 (-2400;370) |