Adolescent behavioural intentions: Secondary outcomes from a cluster randomized controlled trial of the Health4Life school-based lifestyle modification intervention.

IF 2.9 4区医学 Q2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH Canadian Journal of Public Health-Revue Canadienne De Sante Publique Pub Date : 2024-11-19 DOI:10.17269/s41997-024-00955-w

Siobhan O'Dean, Scarlett Smout, Matthew Sunderland, Tim Slade, Lauren A Gardner, Cath Chapman, Louise Thornton, Bridie Osman, Emily Hunter, Lyra Egan, Maree Teesson, Nicola C Newton, Katrina E Champion

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引用次数: 0

Abstract

Intervention: Health4Life: a school-based eHealth intervention targeting multiple health behaviour change (MHBC).

Research question: Does Health4Life impact secondary outcomes of self-reported intentions regarding six lifestyle behaviours in adolescents (alcohol use, tobacco smoking, screentime, physical activity, discretionary beverage consumption, and sleep)?

Methods: We implemented a cluster randomized controlled trial within secondary schools across three Australian states. Schools were randomly assigned (1:1) to receive either the Health4Life intervention, which consisted of a six-module, web-based program and accompanying smartphone app, or an active control (standard health education). Randomization was stratified by site and school gender composition (using Blockrand in R). All students aged 11-13 years who attended the participating schools and were fluent in English were eligible. Students completed self-report questionnaires at baseline, post-intervention, 12 months, and 24 months. Outcomes were intentions to try alcohol, try tobacco, reduce screentime, engage in physical activity on most or all days, swap discretionary beverages for water, and meet sleep guidelines. Mixed effects models estimated between-group differences in the outcomes over 24 months.

Results: Immediately post-intervention, Health4Life significantly reduced intentions to try alcohol and tobacco and increased intentions for longer sleep and reduced screentime compared to control. Intervention effects on screentime intentions persisted at 12 months but not at 24 months. No lasting effects were observed on intentions for physical activity or discretionary beverage consumption.

Conclusion: Health4Life shows promise in influencing adolescent intentions across various MHBC areas, especially immediately after intervention. However, further investigation is needed to sustain these intention changes beyond short term to facilitate behaviour change.

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青少年的行为意向：Health4Life校本生活方式改变干预群组随机对照试验的次要结果。

干预措施研究问题：Health4Life：一项针对多种健康行为改变（MHBC）的学校电子健康干预措施：研究问题：Health4Life 是否会对青少年自我报告的六种生活方式行为（饮酒、吸烟、屏幕时间、体育活动、随意饮用饮料和睡眠）意向的次要结果产生影响？我们在澳大利亚三个州的中学实施了一项分组随机对照试验。学校被随机分配（1:1）接受 "Health4Life "干预措施（包括六个模块的网络课程和配套的智能手机应用程序）或积极对照组（标准健康教育）。随机化是按照地点和学校性别组成进行分层的（使用R语言中的Blockrand）。所有在参与学校就读且英语流利的 11-13 岁学生均符合条件。学生在基线、干预后、12 个月和 24 个月时填写自我报告问卷。结果包括尝试饮酒、尝试吸烟、减少屏幕时间、在大多数时间或所有时间参加体育锻炼、将随意饮用的饮料换成水以及达到睡眠标准的意愿。混合效应模型估算了 24 个月内各组间结果的差异：结果：与对照组相比，干预后的Health4Life明显减少了尝试酒精和烟草的意向，增加了延长睡眠时间和减少屏幕时间的意向。干预对筛选时间意向的影响持续了12个月，但没有持续到24个月。对体育活动或随意饮用饮料的意向没有观察到持久的影响：结论：Health4Life有望影响青少年在MHBC各方面的意向，尤其是在干预后的第一时间。然而，还需要进一步的调查，以便在短期内维持这些意向变化，从而促进行为改变。

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来源期刊

Canadian Journal of Public Health-Revue Canadienne De Sante Publique PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-

CiteScore

6.10

自引率

4.70%

发文量

128

期刊介绍： The Canadian Journal of Public Health is dedicated to fostering excellence in public health research, scholarship, policy and practice. The aim of the Journal is to advance public health research and practice in Canada and around the world, thus contributing to the improvement of the health of populations and the reduction of health inequalities. CJPH publishes original research and scholarly articles submitted in either English or French that are relevant to population and public health. CJPH is an independent, peer-reviewed journal owned by the Canadian Public Health Association and published by Springer. Énoncé de mission La Revue canadienne de santé publique se consacre à promouvoir l’excellence dans la recherche, les travaux d’érudition, les politiques et les pratiques de santé publique. Son but est de faire progresser la recherche et les pratiques de santé publique au Canada et dans le monde, contribuant ainsi à l’amélioration de la santé des populations et à la réduction des inégalités de santé. La RCSP publie des articles savants et des travaux inédits, soumis en anglais ou en français, qui sont d’intérêt pour la santé publique et des populations. La RCSP est une revue indépendante avec comité de lecture, propriété de l’Association canadienne de santé publique et publiée par Springer.