Study Selection
Search results were managed using EndNote (v7.0). After removing duplicates, two reviewers (BB, AMc) assessed study relevance by title, then abstract, and finally full text. A third reviewer (MM) resolved discrepancies. Articles must have met the inclusion criteria: (1) participants had moderate-severe ABI defined as post-traumatic amnesia >1 hour, or Glasgow Coma Scale score <13, or loss of consciousness >15 minutes; (2) participants were 18+ years old; and (3) a dysphagia rehabilitation intervention was provided to participants. Studies were excluded if they were a general review article, systematic review, or scoping review (e.g., Cochrane, ASHA evidence maps). Further, study protocols, feasibility studies, and studies using only qualitative methodology were excluded. Participants with mild ABIs were excluded and based on the following criteria: (1) post-traumatic amnesia <1 hour; or (2) Glasgow Coma Scale score of 13-15; or (3) loss of consciousness <15 minutes. Unavailable full-text articles or conference abstracts with previously included full-text articles were removed. Reference lists of included studies were scanned to identify any publications missed studies.