The website also uses a scale, known as the PEDro scale, to assess the quality of randomized trials included in the database.[2] Trials with higher PEDro scores are displayed first in PEDro search results.[3] A 2010 study found preliminary evidence that this scale, as well as eight of its ten individual items, had validity.[4]
^Macedo, Luciana Gazzi; Elkins, Mark R.; Maher, Christopher G.; Moseley, Anne M.; Herbert, Robert D.; Sherrington, Catherine (August 2010). "There was evidence of convergent and construct validity of Physiotherapy Evidence Database quality scale for physiotherapy trials". Journal of Clinical Epidemiology. 63 (8): 920–925. doi:10.1016/j.jclinepi.2009.10.005. PMID20171839.