• Tengbin Xiong, Karen Bunning, Simon Horton, and Sally Hartley.
• Faculty of Health, School of Allied Health Professions, University of East Anglia, Norwich, UK. tx208@cam.ac.uk
• Disabil Rehabil. 2011 Jan 1; 33 (23-24): 2272-90.

PurposeTo identify the assessment instruments and relevant outcome measures used in randomised clinical trials (RCTs) relating to interventions for adults with communication disorders, and then examine and compare the domains of the outcome measures using the International Classification of Functioning, Disability and Health (ICF) as a reference tool.MethodPublished RCTs with primary focus on the effectiveness of rehabilitation for adults with communication disorders were systematically reviewed. Identified RCTs were examined for all the assessments used as outcome measures. Distinctions were made between the use of standardised assessment tools and non-standardised empirical measures. The key concepts examined by the outcome measures were then linked to the ICF using the established ICF linking rules.ResultsThe systematic review included 24 RCTs in which 11 trials used non-standardised empirical assessment as the outcome measure, and 18 trials included standardised instruments as the outcome measure. It is clear that all the identified items and meaningful concepts from the assessment used in the included studies can be linked to the ICF categories. Of the 108 linked level-two ICF categories, 53% were linked to 'body functions', 36% to 'activity and participation' and 9% to 'environmental factors'.ConclusionsA wide range of outcome measures have been used in RCTs of interventions for adults with communications disorders. The ICF provides a clarifying framework for systematically gathering and examining the information about the content of outcome measures and then can be used as a common reference to identify and compare the domains of the outcome measures. The high proportion of elements relating to body functions raises some questions about the purpose and aims of the interventions.

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