Reported quality of randomized controlled trials of physiotherapy interventions has improved over time

Anne M. Moseley, Robert D. Herbert, Christopher G. Maher, Catherine Sherrington, Mark R. Elkins

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)

Abstract

Objective: To describe the change with time of the reported methodological quality of randomized controlled trials of physiotherapy interventions. Study Design and Setting: For all trials of physiotherapy interventions indexed on the Physiotherapy Evidence Database (PEDro), year of publication, and methodological quality scores (11-item PEDro scale and total PEDro score [range, 0-10]) were extracted. The relationship between trial quality and time was evaluated using regression analyses for the PEDro total score and individual quality items. The study was carried out in a university research center. Results: Data from 10,025 trials published since 1960 were analyzed. The total PEDro score was related to time (year of publication), with the total score increasing by an average of ∼0.6 points each decade between 1960 and 2009. The reported use of eight of the 11 individual items from the PEDro scale (intention-to-treat analysis, concealed allocation, groups similar at baseline, reporting of results of between-group statistical comparisons, point measures and measures of variability reported, subjects randomly allocated to groups, eligibility criteria specified, and blinding of assessors) also improved with time. Conclusion: The reported methodological quality of randomized controlled trials of physiotherapy interventions has improved over time. Further improvement is still necessary.

Original languageEnglish
Pages (from-to)594-601
Number of pages8
JournalJournal of Clinical Epidemiology
Volume64
Issue number6
DOIs
Publication statusPublished - Jun 2011
Externally publishedYes

Keywords

  • Physical therapy (specialty)
  • Quality ratings
  • Randomized controlled trials as a topic
  • Regression analysis
  • Research methodology
  • Time factors

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