Methods
A systematic search was conducted of the following databases: PubMed, Embase, Cochrane Library, CINAHL, and Web of Science Core Collection. The search included studies published up to July 22, 2021. Two authors selected relevant studies and extracted data independently. The quality of the literature was evaluated using the Cochrane collaborative bias risk tool. To estimate the effect size, a meta-analysis of the studies was performed using the Cochrane Collaboration software Review Manager 5.3 PRISMA guidelines were followed.