What is the efficacy and effectiveness of telemedicine intervention for deaf signing populations in comparison to face-to-face interventions? A systematic review.

BACKGROUND: Deaf signing populations face inequality in both access to health services and health outcomes. Telemedicine intervention might offer a potential solution to address these inequalities in mental health and health related services, therefore a systematic review was carried out. The review question was: "What is the efficacy and effectiveness of telemedicine intervention for Deaf signing populations in comparison to face-to-face interventions?". METHODS: The PICO framework was applied to identify the components of the review question for this study. The inclusion criteria were: Deaf signing populations; any intervention that includes the delivery of telemedicine therapy and/or the delivery of assessment (e.g. psychological assessments) using telemedicine; and any evidence for the benefits, efficacy and effectiveness of telemedicine intervention with Deaf people whether in health and/or mental health services. The databases PsycINFO, PubMed, Web of Science, CINAHL, and Medline were searched up to August 2021. RESULTS: Following the search strategy, and after the duplicates were removed, 247 records were identified. Following screening, 232 were removed as they did not meet the inclusion criteria. The remaining 15 full-text articles were assessed for eligibility. Only two met the criteria to be included in the review (both concerned telemedicine and mental health interventions). However, they did not fully answer the review's research question. Therefore, the evidence gap remains regarding the effectiveness of telemedicine intervention for Deaf people. CONCLUSIONS: The review has identified a gap in the knowledge on the efficacy and effectiveness of telemedicine intervention for Deaf people when compared with face-to-face interventions.