Table 2. Quality assessment tools, their passing score, and which studies passed.

PRISMA - Preferred Reporting Items for Systematic Reviews and Meta-Analyses

Quality assessment tool	Study design	The maximum score that can be attained	Score accepted (more than 70%)	Studies with passing scores
PRISMA [13]	Systematic reviews and meta-analyses	27	19	Giossi et al. [1]; Huang et al. [4]; Qureshi A.R et al. [5]; Ahmed et al. [8]; Binde et al. [14]
Cochrane risk of bias tool [15]	Randomized control trials	7	5	Hattori et al. [7]; Borgohain et al. [9]; Schapira et al. [10]