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MEDLINE, CINAHL, Scopus, Embase, and Web of Science databases will be searched from 1980 to the present for English-language studies only. Prevalence and incidence data, experimental, quasi-experimental, observational, and descriptive studies will be included and critically appraised by two independent reviewers. Data will be extracted using the standardized data extraction tool for prevalence data. If sufficient data is available, a meta-analysis will be conducted; otherwise, the findings will be presented in narrative form including ta