Quality appraisal of reviews
The first two authors (HAO and NS) independently utilised two separate,
validated tools for evaluating the methodological quality of the
included reviews. The first is ”A
MeaSurement Tool to Assess systematic Reviews-2” (AMSTAR-2), which was
used for assessing systematic and scoping reviews. AMSTAR-2 consists of
16 items; each item ranked into three levels; yes, no or partial yes.
The final scores of each included review were rated as ”high” which mean
that review provides a comprehensive summary of findings, ”moderate
level mean that review more weakness but not critical flaws, while ’low”
level indicates that review has not provided comprehensive findings and
has critical flows.25 The second tool is the
”International Narrative Systematic assessment”
(INSA) which was used for
assessing narrative review papers. It contains seven items where each
item is rated as ’yes’ or ’no’. A review with a total score of higher
than 5 points is judged as a ’good’ quality paper. 26