Table 6.

Quality assessment of the systematic reviews included following the AMSTAR (“A Measurement Tool to Assess Systematic Reviews”) checklist.

Authors and Year	‘A Priori’ Design Provided?	Duplicate Study Selection and Data Extraction?	Comprehensive Literature Search?	Status of Publication (i.e., Grey Literature) as an Inclusion Criterion?	List of Studies (Included and Excluded)?	Characteristics of the Included Studies?	Quality of Included Studies Assessed and Documented?	Scientific Quality Used Appropriately in Formulating Conclusions?	Appropriate Methods Used to Combine the Findings of Studies?	Likelihood of Publication Bias Assessed?	Conflict of Interest Stated?	AMSTAR Score Mean (SD)
Kotsovilis et al., 2010 [21]	1	2	2	2	2	2	2	2	NA	NA	2	17
Del Fabbro et al., 2011 [23]	N	2	2	2	2	1	1	1	1	2	N	14
Del Fabbro et al., 2013 [30]	N	2	2	2	2	1	1	2	N	1	N	13
Shah et al., 2014 [25]	N	2	1	1	N	2	2	1	1	N	N	10
Hou et al., 2016 [24]	N	2	N	1	2	1	1	1	2	2	N	12
Panda et al., 2016 [31]	1	2	2	N	2	1	2	2	1	2	N	15
Castro et al., 2017 [27]	1	2	2	N	2	2	2	1	2	N	N	14
Miron et al., 2017 [28]	1	2	2	N	N	1	N	N	NA	NA	N	6
Najeeb et al., 2017 [26]	1	1	N	N	N	1	2	2	NA	NA	N	7
Del Fabbro et al., 2018 [22]	2	2	2	2	2	2	2	2	2	2	2	22
Saleem et al., 2018 [34]	1	2	2	2	2	1	1	2	2	1	N	16
Zhou et al., 2018 [32]	N	2	N	N	N	1	2	1	2	2	N	10
Baghele et al., 2019 [33]	1	N	2	1	N	1	2	1	1	2	N	11
Li et al., 2019 [29]	N	2	N	1	N	2	2	1	2	N	N	10
AMSTAR score	9	25	19	14	16	19	22	19	16	14	4	12.6 (4.2)

N = criterion not met; NA = not applicable.