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.