Table 2.

Quality Assessment of Controlled Intervention Studies

Pedro Scale Items	Kocyigit M et al, 201538	Anandkumar et al, 201440	Cho et al, 201533	Taheri et al, 201736	Kaya et al, 201749	Park and Kim,  201834	Nwe et al, 201945	Tripathi et al, 201741	Hayati et al, 201948	Donecand Kubilius et al, 201939	Giusepp et al, 2016	Lee et al, 201635	Rahlf et al, 201943	Sedhom, 201644	Anandkumar et al, 201450	Dhanakotti et al, 201647	Wageck et al, 201646	Abolhasaniet al, 201937
Eligibility	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Random allocation	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes
Concealed allocation	Yes	Yes	Yes	Yes	Yes	No	Yes	No	Yes	Yes	Yes	No	No	No	No	No	Yes	Yes
Baseline comparability	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Blind participants	No	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes
Blind therapist	Yes	No	No	No	No	No	No	No	Yes	No	No	No	No	No	No	No	No	No
Blind assessor	No	No	No	No	No	Yes	No	No	Yes	Yes	No	No	No	No	No	Yes	Yes	No
Adequate follow-up	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No
Intention-to-treat analysis	Yes	Yes	No	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Between-group comparisons	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Point estimates and variability	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes	No	No	Yes
Total quality score out of 10	8	8	5	6	8	6	8	7	9	9	7	5	7	6	7	7	7	7
Graded approach	High	High	Moderate	High	High	High	High	High	High	High	High	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate