3.3 Quality of the studies reported on PEs
Overall, there were two high quality trials (7, 24), three moderate
quality trials (6, 26, 27) and two low quality trials (5, 25). None of
the seven trials included the blinding of the therapists; all trials
except two (7, 24) did not satisfy the domain for blinding of the
participants. Similarly, all trials except one (24) met the criteria on
the allocation of concealment; and all trials except two (6, 24) did not
blind the assessors. The PEDro scores of the individual studies were
shown in the Table 2.