Table 2.

Jadad scores of RCTs (n = 17).

Studies		Randomisation	Double-Blinding	Withdrawals and Drop-Outs	Score
Arshad et al., 2016 [35]		1	0	1	2
Wanders et al., 2013 [36]	Study 1	1	0	1	2
	Study 2	1	0	1	2
Rao et al., 2015 [37] *	Study 1	1	1	1	3
	Study 2	1	0	1	2
Aoe et al., 2014 [38]		1	0	1	2
Lumaga et al., 2012 [39]		1	0	1	2
Wanders et al., 2014 [40]		2	0	1	3
Martinelli et al., 2017 [41]		1	0	1	2
Astbury et al., 2013 [42]		2	0	1	3
Soong et al., 2016 [43]		2	0	1	3
Hull, et al., 2012 [44]		1	0	1	2
Juvonen et al., 2009 [45]		1	0	1	2
Boll et al., 2015 [46]		1	0	1	2
Thazhath et al., 2014 [47]		1	0	1	2
Luhovyy et al., 2014 [48]		1	0	1	2
Solah et al., 2014 [48]		2	0	1	3

* only study 1 was double-blinded.