Table 3.

Randomised trials assessed with Modified Jadad score.

	Modified Jadad score:	Kothari et al.	Upadhyaya et al.	Hafiz et al.	Karabas et al.	Thu et al.	Lin et al.	Gupta et al.
1	Was the study described as Randomised? (0,1)	1	1	1	1	1	1	1
2	Was the method of randomization appropriate? (−1 if innapropriate)	1	1	1	1	1	1	1
3	Was the study described as blinded?	1	1	1	1	1	0	1
4	Was the method of blinding appropriate (double blind)? (−1 if innapropriate)	−1	−1	−1	−1	−1	0	−1
5	Was there a description of withdrawals and dropouts?	1	1	0	1	1	1	1
6	Was there a clear description of the inclusion/exclusion criteria?	1	1	1	1	1	1	1
7	Was the method used to assess adverse effects described?	0	1	0	0	0	1	1
8	Was the method of statistical analysis described?	1	1	1	1	1	1	1
	Total score (4–8 high, 0–3 low)	5	6	4	5	5	6	6