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  • Title: Reliability of the seated postural control measure for adult wheelchair users.
    Author: Gagnon B, Noreau L, Vincent C.
    Journal: Disabil Rehabil; 2005 Dec 30; 27(24):1479-91. PubMed ID: 16421073.
    Abstract:
    PURPOSE: To evaluate the test-retest and interrater reliability of the Seated Postural Control Measure for Adults 1.0 (SPCMA 1.0). METHOD: The participants were evaluated first by two raters and then, 3 weeks later, by one rater. Section 1 (one item, seven-point scale) evaluates the adult's overall ability to control its posture in a sitting position. Sections 2 and 3 (22 items each, scored on a seven-point scale), evaluate the adult's postural alignment in a static position and the changes in postural alignment induced by a dynamic activity. RESULTS: For the test-retest reliability, the intraclass correlation coefficient (ICC) of section 1 was excellent (0.95) and moderate to good for sections 2 and 3 (0.60 - 0.62) and their subsections (0.47 - 0.78). For interrater reliability, the three sections had good to excellent ICCs (0.68 - 0.93) and their subsections had moderate to good ICCs (0.41 - 0.69). A large range was observed in Kappa coefficients (test-retest and interrater reliability) for the item analysis of the sections 2 and 3, due to a lack of variability in some items. CONCLUSIONS: The results confirm that the SPCMA is reliable as a whole. Suitable information has been obtained for the development of the SPCMA 2.0 and, although further psychometric testing is needed, the latter should improve clinical evaluation of seated postural control in adult wheelchair users.
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