Reliability and validity of the capabilities of upper extremity test (CUE-T) in subjects with chronic spinal cord injury

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Study examined the reliability and validity of the Capabilities of Upper Extremity Test (CUE-T), a measure of functional limitations in the arm and hand, in patients with chronic tetraplegia. Data were obtained from 50 subjects (36 male/14 female) with chronic stable spinal cord injury (SCI). Test-retest reliability was examined using the intraclass correlation coefficient (ICC). Construct validity was evaluated using Spearman correlations of CUE-T with upper extremity motor scores (UEMS), and the self-care and mobility portions of the Spinal Cord Independence Measure (SCIM). Weighted kappa and repeatability values were also calculated. Score ranges were 8 to 50 for UEMS, 7 to 135 for CUE-T, 0 to 20 for self-care SCIM, and 0 to 40 for mobility SCIM. The ICC values for total, right, and left side scores were excellent (0.97–0.98). Item weighted kappa values were =0.60 for all but five items, four of which were right and left pronation and supination. Repeatability of total score was 10.8 points, right and left sides 6.3 and 6.1 points. Spearman correlations of the total CUE-T with the UEMS and SCIM self-care and mobility scores were 0.83, 0.70, and 0.55 respectively. Results indicate that the CUE-T displays excellent test-retest reliability, and good-to-excellent correlation with impairment and capacity measures in people with chronic SCI.

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