Purpose: Present study investigated the effectiveness of school-based intervention programs on reducing aggression among children and adolescents. Method: A thorough search was carried out on 12 electronic databases. Seventeen studies were finalized, and meta-analyses were performed using a random effect model on RevMan software. Results: Findings reveal that existing school-based programs have a significant effect on reducing aggression (standardized mean differences = −0.35, 95% confidence interval [−0.53, −0.18], Z = 3.92, p < .001). Furthermore, subgroup analysis found that interventions with a theoretical basis, using a randomized controlled trial (RCT) design, or having a short duration of each session (below 45 min), were more effective than ones without a theoretical basis, using a quasi-experimental design, or having longer session duration (above 45 min) on reducing aggressive behaviors. Conclusion: This review provided implications to improve school-based interventions by developing designs based on the guidance of theories and RCT design, as well as limiting session duration.

中文翻译：

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学校针对儿童和青少年攻击行为的项目的有效性：系统回顾和荟萃分析

目的：本研究调查了以学校为基础的干预计划在减少儿童和青少年攻击行为方面的有效性。方法：对12个电子数据库进行彻底检索。十七项研究最终完成，并使用 RevMan 软件上的随机效应模型进行荟萃分析。结果：研究结果表明，现有的校本项目对减少攻击行为具有显着效果（标准化平均差 = −0.35，95% 置信区间 [−0.53, −0.18]，Z = 3.92，p < .001）。此外，亚组分析发现，有理论基础的干预措施（使用随机对照试验（RCT）设计或每次疗程持续时间短（低于 45 分钟））比没有理论基础的干预措施（使用准随机对照试验）更有效。实验设计，或延长疗程时间（45 分钟以上）以减少攻击性行为。结论：本次综述通过在理论和随机对照试验设计的指导下制定设计以及限制课程持续时间，为改善校本干预措施提供了启示。