Table 4: Analysis of the methodological quality of Czepa et al.’s [14] study, by Van Tulder scale.

Items Czepa et al. (2013) [14]

Was the method of randomization adequate?No
Was the treatment allocation concealed? No
Were the groups similar at baseline regarding the most important prognostic indicators? Yes
Was the patient blinded to the intervention? No
Was the care provider blinded to the intervention?No
Was the outcome assessor blinded to the intervention?No
Were cointerventions avoided or similar?No
Was the compliance acceptable in all groups? No
Was the drop-out rate described and acceptable?No
Was the timing of the outcome assessment in all groups similar? Yes
Did the analysis include an intention-to-treat analysis? No