Intervention Effectiveness of Health Behaviors During <scp>COVID</scp> ‐19: A Systematic Review and a Network Meta‐Analysis

In the context of a global public health crisis, such as COVID-19, developing interventions to improve population health behaviors has emerged as a pivotal element of health management strategies. The efficacy of various interventions implemented during this period has varied, and the impact of different variables on these intervention outcomes remains to be fully elucidated. This study screened 57 papers (n = 47,264) by searching electronic databases and revealed the optimal intervention through pairwise meta-analysis and network meta-analysis, as well as the changes in intervention effectiveness under different conditions. Our research findings indicate that interventions for preventive health behaviors and health-promoting behaviors have significant effects. For preventive health behaviors, the intervention method of health education and low-risk information framework under information intervention was the optimal intervention. For health-promoting behaviors, the exercise intervention and the prosocial information framework with information intervention were the optimal interventions. Accordingly, future research should focus on the in-depth exploration of specific interventions to establish and improve the effectiveness of interventions.