Translation, Cross-Cultural Adaptation, Reliability and Validity of the Thai Version of the Trunk Impairment Scale 2.0
Keywords:trunk assessment, stroke, reliability, validity, disability evaluation
Objectives: This study aimed to translate the Trunk Impairment Scale 2.0 (TIS-2.0) into Thai language and to test its reliability and validity.
Study design: Descriptive cross-sectional design.
Setting: The Thai Red Cross Rehabilitation Center, Thailand.
Subjects: Forty-seven stroke patients (33 males and 14 females) who received rehabilitation.
Methods: A cross-cultural adaptation process was used to translate TIS-2.0 to Thai version (TIS-TH). Four assessors with differing years of work experience scored the patients using the TIS-TH, evaluating from the video record 2 times with a 2-week interval. The results were analyzed by Cronbach’s alpha for internal consistency. Testing of intra-rater and inter-rater reliability was analyzed by Intraclass Correlation Coefficient (ICC). Spearman’s Rank Correlation Coefficient was used to test validity between the TIS-TH and the Berg Balance Scale (BBS), the Motor Assessment Scale (MAS, sitting balance subscale), and the Functional Reach Test (FRT).
Results: The TIS-TH had good internal consistency. Cronbach’s alpha was 0.823. The reliability of inter-rater and intra-rater were 0.885 (95% CI: 0.763-0.941) and 0.951 (95% CI: 0.927-0.971), respectively. Spearman’s Rank Correlation Coefficient between the TIS-TH and the three other measures the BBS, the MAS and the FRT were 0.800, 0.710 and 0.731, respectively.
Conclusion: The TIS-2.0 Thai version was acceptable, reliable and valid for evaluating trunk control in stroke patients. It could be one of disability evaluations that health care personnel in Thailand can apply in clinical practice.
Keywords: trunk assessment, stroke, reliability, validity, disability evaluation
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