| Summary: | Background: Evidence of intervention effectiveness depends on, among other things, the use of a common set of valid and reliable measures that are responsive to change and reflect clinically important outcomes. Objective: To identify clinical assessment instruments with properties for measuring unsupported sitting balance in subjects with spinal cord injury (SCI). Methods: Bibliographic databases (PubMed, Science Direct, CINAHL, and Central) were searched for articles with the key words "spinal cord injury," "unsupported sitting," and "outcome assessment" in combination with a specific methodological search filter for each database. Studies describing the application of any assessment instrument for measuring unsupported sitting balance in subjects with SCI, which had the evaluation of any measurement property, were included in the review. Publication details, measure's name, setting, summary statistics, measurement properties (reliability, validity, responsiveness), and statistical significance (p values) were extracted. Results: Eight hundred forty publications were identified; 8 articles were included in the systematic review. Twelve instruments were identified and analyzed, showing limited and incomplete measurement properties. Among them, 10 addressed activity, 1 addressed structures/body functions, and 1 addressed both activity and structures/body functions domains of the International Classification of Functioning, Disability and Health (ICF). Conclusion: Based mainly on the measurement properties and the development of the instruments analyzed in this review, the Sitting Balance Measure, the Trunk Control Test, and the Set of Assessment Tools for Measuring Unsupported Sitting seem to be the most appropriate and recommended measures to assess unsupported sitting in subjects with SCI.
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