Subgroup analyses stratified by school type of the associations between the intervention group (vs the control group) and unintended outcomes measured at 5 months follow-up among daily smokers at baseline, using multiple imputation of missing data (N=40×491)
| Unintended outcome at follow-up | Intervention group (n=40×264) | Control group (n=40×227) | Adjusted* | |
| % | % | OR | 95% CI | |
| Regular use of either smokeless tobacco, hookah or e-cigarettes | ||||
| VET schools: social and healthcare | 49.0 | 47.0 | 1.16 | 0.43 to 3.09 |
| VET schools: technical and commercial | 62.2 | 70.2 | 0.65 | 0.24 to 1.79 |
| PBE schools | 61.1 | 51.5 | 2.07 | 0.58 to 7.39 |
| Regular cannabis use | ||||
| VET schools: social and healthcare | 8.3 | 4.4 | – | – |
| VET schools: technical and commercial | 12.2 | 6.5 | – | – |
| PBE schools | 19.0 | 13.0 | 1.84 | 0.44 to 7.71 |
| Well-being | ||||
| Boredom in breaks during school hours | ||||
| VET schools: social and healthcare | 21.0 | 19.5 | 1.05 | 0.36 to 3.11 |
| VET schools: technical and commercial | 18.3 | 42.8 | 0.27 | 0.10 to 0.75 |
| PBE schools | 32.5 | 34.7 | 0.78 | 0.18 to 3.39 |
| Loneliness during school hours | ||||
| VET schools: social and healthcare | 17.7 | 11.3 | 1.68 | 0.54 to 5.27 |
| VET schools: technical and commercial | 17.8 | 18.3 | 1.12 | 0.33 to 3.83 |
| PBE schools | 18.4 | 23.3 | 0.75 | 0.18 to 3.13 |
| High level of stress | ||||
| VET schools: social and healthcare | 75.2 | 77.3 | 0.82 | 0.37 to 1.81 |
| VET schools: technical and commercial | 62.2 | 73.7 | 0.52 | 0.16 to 1.67 |
| PBE schools | 68.5 | 73.9 | 0.64 | 0.20 to 2.04 |
| Stigmatisation among smokers | ||||
| Self-stigma | ||||
| VET schools: social and healthcare | 35.1 | 32.8 | 1.14 | 0.46 to 2.85 |
| VET schools: technical and commercial | 30.8 | 39.9 | 0.66 | 0.27 to 1.64 |
| PBE schools | 33.0 | 31.2 | 0.98 | 0.26 to 3.62 |
| Felt stigma | ||||
| VET schools: social and healthcare | 9.9 | 10.4 | 0.87 | 0.27 to 2.76 |
| VET schools: technical and commercial | 17.8 | 10.2 | 2.07 | 0.53 to 8.05 |
| PBE schools | 7.9 | 6.6 | – | – |
Due to low student representation in the discrimination subscale, regression analyses were not possible, leading to its exclusion from the table. Similarly, the small percentages of students in VET schools reporting cannabis use, as well as PBE schools experiencing felt stigma, resulted in exclusion from the analyses.
*Adjusted for gender, socioeconomic status, age and baseline variable if available (available variables include regular smokeless tobacco, hookah and e-cigarette use).
PBE, preparatory basic education; VTE, vocational education and training.