Reliability and Validity of a Thai Version of a Modified Frenchay Activities Index for Use with Stroke Patients

Objectives: To evaluate the reliability and validity of the Thai version of the modified Frenchay Activities Index (mFAI) ques-tionnaire for use with stroke patients Study design: Descriptive study Setting: Department of Rehabilitation Medicine and Neurology Division, Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand Subjects: Stroke patients visiting the Outpatient Department of the Rehabilitation Medicine and Neurology Division, Department of Medicine, from March 2020 to August 2020 Methods: Data were collected using a Thai version of the modified Frenchay Activities Index (Thai-mFAI). Of 75 patients, 70 met the inclusion criteria. After the initial assessment, all 70 participants were reassessed 3-7 days later to determine test-retest reliability. Validity was assessed from 59 participants by evaluating the correlation between the Stroke Impact Scale (SIS) and the Timed Up-and-Go test (TUG). Results: The Thai-mFAI showed good content validity (CVI = 0.95), fair construct validity (convergent validity; r=0.287-0.310, discriminant validity; r=-0.259), excellent test-retest reliability (ICC3,1=0.929) and excellent internal consistency (Cronbach’s alpha = 0.936). Conclusions: The Thai-mFAI was found to have good content validity, fair construct validity, excellent test-retest reliability, and excellent internal consistency. These suggested that Thai-mFAI is suitable for evaluating how well active stroke patients can per-form activities of daily living.