The Global Meta-Analysis Journal (GMAJ) is a peer-reviewed, open-access journal dedicated to advancing meta-analysis across disciplines. It provides a global platform for synthesizing quantitative evidence to inform research, policy, and practice. GMAJ focuses on clinical and public health, environmental sciences, social sciences, and methodological innovations. As the first journal exclusively devoted to interdisciplinary meta-analyses, it promotes cross-sector integration, methodological rigor, and high-impact evidence synthesis. The journal welcomes original research, methodologies, protocols, commentaries, and data papers.