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Cluster randomization
| Course |
|||
|---|---|---|---|
| Secondary Vocational School | Care | Technology | Economy |
| Type 1 | IG1a | IG2b | WLGc |
| Type 2 | WLG | IG1 | IG2 |
| Type 3 | IG2 | WLG | IG1 |
IG1: Intervention group 1 [Mindfulness-Based Stress Reduction (MBSR)].
IG2: Intervention Group 2 (MBSR and an organizational health intervention).
WLG: Waiting List Group (control group that received MBSR 1 year later).
