TABLE 2.

Modified Jadad scale for evaluation of the methodological quality of the randomized clinical trial¹

Study, year (ref)	Was the research described as randomized?	Was the approach to randomization appropriate?	Was the research described as blinded?2	Was the approach to blinding appropriate?	Was there a presentation of withdrawals and dropouts?	Was there a presentation of the inclusion/exclusion criteria?	Was the approach used to assess adverse effects described?	Was the approach for statistical analysis described?	Total
Alemán-Mateo et al., 2014 (15)	1	1	0.5	1	1	0	0	1	5.5

¹High-quality studies received scores of 4–8; ref, reference.

²Double-blind scores 1; single-blind scores 0.5.