Table 1.

Assessment criteria of the PEDro database (modified from www.pedro.org.au, 23 October 2015, date last accessed)

Part 1: Criteria for inclusion of clinical trials in PEDro (all criteria must be fulfilled)
The trial must involve comparison of at least two interventions. One of these interventions could be a no treatment control or a sham treatment. At least one of the interventions being evaluated must be currently part of physiotherapy practice or could become part of physiotherapy practice. However, the study need not be carried out by physiotherapists. The interventions should be applied to subjects who are representative (or who are intended to be representative) of those to whom the intervention might be applied in the course of physiotherapy practice. The trial should involve random allocation or intended-to-be-random allocation of subjects to interventions. The paper must be a full paper (not an abstract) in a peer-reviewed journal.
Part 2: Assessment criteria of clinical trials included in PEDro
No.	Assessment criterion
1a	Eligibility criteria were specified.
2	Subjects were randomly allocated to groups.
3	Allocation was concealed.
4	The groups were similar at baseline regarding the most important prognostic indicators.
5	There was blinding of all subjects.
6	There was blinding of all therapists who administered the therapy.
7	There was blinding of all assessors who measured at least one key outcome.
8	Measures of at least one key outcome were obtained from >85% of the subjects initially allocated to groups.
9	All subjects for whom outcome measures were available received the treatment or control condition as allocated or, where this was not the case, data for at least one key outcome were analysed by ‘intention to treat’.
10	The results of between-group statistical comparisons are reported for at least one key outcome.
11	The study provides both point measures and measures of variability for at least one key outcome.

^aThis criterion influences external validity, but not the internal or statistical validity of the trial. It has been included in the PEDro scale so that all items of the Delphi scale⁹ are represented on the PEDro scale. This item is not used to calculate the PEDro score.