A Scoping Review of Implementation Science Studies in the Field of Traumatic Brain Injury: State of the Science and Future Directions.

Objective: Implementation research is essential to accelerating the public health benefits of innovations in health settings. However, the US National Academies of Sciences, Engineering, and Medicine 2022 report identified a lag in published implementation research applied to traumatic brain injury (TBI). Our objectives were to characterize implementation science studies published to date in TBI clinical care and rehabilitation and provide recommendations for future directions.

Methods: A scoping review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. Articles published between 2011 and 2023 were identified (MEDLINE, PubMed, PsychInfo, and Web of Science), and included if the study focused on the TBI population, measured at least one Proctor (2011) implementation outcome and aligned with implementation research designs. Data were charted using an extraction template.

Results: Of the 38 articles, 76% were published between 2018 and 2023. About 37% of articles were in the pre-implementation phase, and 57.9% were in the implementation phase. Over half of articles used a theory, model, or framework to guide the research. Fifteen studies were descriptive, 10 were qualitative, 7 were mixed methods, and 4 were randomized controlled trials. Most studies investigated implementation outcomes regarding national guidelines following TBI or TBI symptom management. Adoption (42.1%) and fidelity (42.1%) were the most commonly studied implementation outcomes, followed by feasibility (18.4%), acceptability (13.2%), and penetration (10.5%). Only 55% of studies used or tested the effectiveness of one or more implementation strategies, with training and education used most commonly, followed by data warehousing techniques.

Conclusions: Future research should prioritize the selection and investigation of implementation strategy effectiveness and mechanisms across contexts of care and use implementation research reporting standards to improve study rigor. Additionally, collaborative efforts between researchers, community partners, individuals with TBI, and their care partners could improve the equitable translation of innovations across service contexts.