Table 1.

PEDro scale for the methodological quality assessment

Study	Eligibility	1. Random allocation	2. Concealed allocation	3. Baseline comparability	4. Blind subjects	5. Blind therapists	6. Blind assessors	7. Adequate follow-up	8. Intention-to-treat analysis	9. Between-group comparisons	10. Point estimates and variability	Total Score
Sjostromet al., 2013 [19]	+	+	–	+	–	–	–	+	+	+	+	6
Sjostromet al., 2015 [20]	+	+	–	+	–	–	–	+	+	+	+	6
Sjostrom et al.,2015 [21]	+	+	–	–	–	–	–	+	–	+	+	4
Hui et al., 2006 [22]	+	+	–	+	–	–	–	+	–	+	+	5

Eligibility criteron item does not contribute to the total score; + criterion is clearly satisfied; − criterion is not satisfied