2020 Volume 47 Issue 2 Pages 181-188
Purpose: This study aimed to assess the reliability and validity of the Japanese version of the Trunk Impairment Scale (TIS-J) for patients with spastic cerebral palsy.
Methods: A cross-sectional study was conducted, in which a total of 69 patients were enrolled. The reliability of the results were tested for 20 patients by intra-rater and inter-rater reliabilities and minimal detectable change at 95% confidence interval (MDC95), and construct validity by comparing them with the Gross Motor Function Classification System scores.
Results: The intra-class and interclass correlation coefficients for test–retest reliability were 0.90–0.99. The intra-rater MDC95 values for static sitting balance, dynamic sitting balance, coordination, and total score were 0.44, 1.35, 0.44, and 0.96, respectively, while the inter-rater MDC95 values for the same were 1.54, 1.97, 1.15, and 2.37. The Spearman correlation coefficient were –0.63, –0.76, –0.30, and –0.74. It revealed a good relationship for validity between the change in score for the dynamic sitting balance and total TIS-J scores.
Conclusions: The TIS-J was found to be reliable and valid for patients with spastic cerebral palsy.
