Intervention adaptation is likely to occur to some extent when implementing interventions in new implementation contexts. Using systematic frameworks can guide intentional and effective adaptation processes. Intervention Mapping for Adaptation (IM-ADAPT) is a framework that offers step-by-step guidance for systematic, theory-based intervention adaptation. Despite the increasing use of IM-ADAPT, there is limited understanding of the contexts in which it has been applied and how effectively it is used and reported. Addressing this knowledge gap can improve current adaptation practices and inform future enhancements of the IM-ADAPT framework and the broader science of intervention adaptation. This review aims to (1) determine the context in which IM-ADAPT is used, (2) assess how studies apply IM-ADAPT tasks and (3) evaluate how these studies report their IM-ADAPT findings.

This protocol followed the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols guidelines. The eligibility criteria include original peer-reviewed English articles that used Intervention Mapping or IM-ADAPT to adapt interventions. We searched PubMed/Medline, Web of Science, Embase and the Intervention Mapping literature library, and conducted forward citation searches using two landmark articles from inception to 19 July 2024. At least two independent coders will screen the records to determine eligibility and extract data from the included articles. Any discrepancies will be resolved through regular co-author meetings or in consultation with a senior author. The study protocol was registered on the Open Science Framework (https://doi.org/10.17605/OSF.IO/D5TCP).

As this systematic review only used published data, no ethics approval was required. We will disseminate the findings of this review through open-access channels and journals.