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Change in students’ PPOS-D12 scores during the study
| All participants completing both surveys (n = 306) | Allocated to active intervention (n = 150) | Allocated to sham intervention (n = 156) | Significance level* | |
|---|---|---|---|---|
| Increase in mean PPOS-D12 score (SD) | 0.27 (0.44) | 0.23 (0.41) | 0.32 (0.47) | p = 0.426 |
* For difference between active and sham intervention groups, after adjustment for different baseline PPOS-D12 scores using ANCOVA
