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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Ear Hear. 2021 Feb 9;42(5):1137–1150. doi: 10.1097/AUD.0000000000001005

Figure 1. PRISMA flow diagram detailing the identification, screening and selection of studies for inclusion in the analysis.

Figure 1.

Note. “Database searching” includes searches of PubMed, ProQuest, ProQuest Dissertations and Theses, and targeted Google Scholar searches. Studies identified through other sources include 470 abstracts from the 2015–2019 International Society for Autism Research (INSAR) annual meetings and 46 potentially eligible studies identified by forward and backward citation tracing of included articles. Specific keywords and full details of the search procedure are available in the Supplemental Methods.