Table 2. Summary of the Newcastle Ottawa Scale for the included clinical trials studies.

Good quality: 3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain

Fair quality: 2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain

Poor quality: 0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain

#	Study (Year)	Selection	Comparability	Outcome	Overall Grade
1	Al-Najar et al. (2017) [32]	***	*	**	Good
2	Chahal et al. (2019) [23]	***	*	***	Good
4	Mautner et al. (2019) [33]	***	*	**	Good
3	Wells et al. (2021) [16]	***	*	***	Good