AIM: To evaluate the effectiveness of the Healthy School and Drugs programme on alcohol, tobacco and marijuana use among Dutch early adolescents. DESIGN: Randomized clustered trial with two intervention conditions (i.e. e-learning and integral). SETTING:General population of 11-15-year-old adolescents in the Netherlands. PARTICIPANTS: A total of 3784 students of 23 Dutch secondary schools. MEASUREMENTS: Structured digital questionnaires were administered pre-intervention and at 32 months follow-up. The primary outcome measures were new incidences of alcohol (life-time and 1-month prevalence), tobacco (life-time and 1-month prevalence) and marijuana use (life-time prevalence). FINDINGS: Main effect analyses showed no programme effects on incidences of alcohol consumption (life-time prevalence: e-learning condition: B = 0.102, P = 0.549; integral condition: B = -0.157, P = 0.351; 1-month prevalence: e-learning condition: B = 0.191, P = 0.288; integral condition: B = -0.140, P = 0.445), tobacco consumption (life-time prevalence: e-learning condition: B = 0.164, P = 0.444; integral condition: B = 0.160, P = 0.119; 1-month prevalence: e-learning condition: B = 0.088, P = 0.746; integral condition: B = 0.261, P = 0.093), or marijuana consumption (life-time prevalence: e-learning condition: B = 0.070, P = 0.732; integral condition: B = 0.186, P = 0.214). CONCLUSION: The non-significant impact of the Healthy School and Drugs programme (a Dutch school-based prevention programme for early adolescents) on incidences of alcohol, tobacco and marijuana use indicates that the programme is either ineffective or implemented inadequately.
RCT Entities:
AIM: To evaluate the effectiveness of the Healthy School and Drugs programme on alcohol, tobacco and marijuana use among Dutch early adolescents. DESIGN: Randomized clustered trial with two intervention conditions (i.e. e-learning and integral). SETTING: General population of 11-15-year-old adolescents in the Netherlands. PARTICIPANTS: A total of 3784 students of 23 Dutch secondary schools. MEASUREMENTS: Structured digital questionnaires were administered pre-intervention and at 32 months follow-up. The primary outcome measures were new incidences of alcohol (life-time and 1-month prevalence), tobacco (life-time and 1-month prevalence) and marijuana use (life-time prevalence). FINDINGS: Main effect analyses showed no programme effects on incidences of alcohol consumption (life-time prevalence: e-learning condition: B = 0.102, P = 0.549; integral condition: B = -0.157, P = 0.351; 1-month prevalence: e-learning condition: B = 0.191, P = 0.288; integral condition: B = -0.140, P = 0.445), tobacco consumption (life-time prevalence: e-learning condition: B = 0.164, P = 0.444; integral condition: B = 0.160, P = 0.119; 1-month prevalence: e-learning condition: B = 0.088, P = 0.746; integral condition: B = 0.261, P = 0.093), or marijuana consumption (life-time prevalence: e-learning condition: B = 0.070, P = 0.732; integral condition: B = 0.186, P = 0.214). CONCLUSION: The non-significant impact of the Healthy School and Drugs programme (a Dutch school-based prevention programme for early adolescents) on incidences of alcohol, tobacco and marijuana use indicates that the programme is either ineffective or implemented inadequately.
Authors: Laura Tinner; Jennifer C Palmer; E Caitlin Lloyd; Deborah M Caldwell; Georgie J MacArthur; Kaiseree Dias; Rebecca Langford; James Redmore; Linda Wittkop; Sarah Holmes Watkins; Matthew Hickman; Rona Campbell Journal: BMC Public Health Date: 2022-06-03 Impact factor: 4.135
Authors: Louise K Thornton; Cath Chapman; Dana Leidl; Chloe Conroy; Maree Teesson; Tim Slade; Ina Koning; Katrina Champion; Lexine Stapinski; Nicola Newton Journal: Internet Interv Date: 2018-03-24