| Intervention group | Control group | Group differences | ||||
| M | SD | M | SD | t | P value | |
| Age (years) | 44.2 | 10.9 | 44.3 | 10.4 | −0.10 | 0.918 |
| Work demands (1–4 high demands) | 2.41 | 0.6 | 2.31 | 0.6 | 2.17 | 0.031 |
| Work control (1–4 high control) | 3.02 | 0.5 | 2.94 | 0.5 | 2.17 | 0.030 |
*One missing in intervention group, two missing in control group.
†χ2 -test significant at the 0.01-level.
‡χ2-test University level (1 yes; 0 no).
§49 missing in intervention group, 27 missing in control group.
¶49 missing in intervention group, 29 missing in control group.
**χ2 -test.
††One missing value in intervention group.