Table 1.

Jadad scores of the included studies

Study	Randomization			Blindness			Dropouts		Scores
	Not randomized	Described as randomized	Randomization was described and it was appropriate	Not blind	Described as double blind	Double blinding was described and it was appropriate	Not described in the follow-up	Contained a description of dropouts
	0	1	2	0	1	2	0	1
Rothschild et al17	1			2			1		4
Mahableshwarkar et al16	1			2			1		4
Mahableshwarkar et al15	2			2			1		5
Bidzan et al18	1			2			1		4