Impact on Participation and Autonomy Questionnaire: Psychometric Properties of the Thai Version

[Purpose] The present study aimed to cross-culturally translate and evaluate the reliability and validity of the Thai version of the Impact on Participation and Autonomy (IPA) in persons with spinal cord injury (SCI). [Subjects] One hundred and thirty-nine persons with SCI who lived in the community were recruited for this study. [Methods] The IPA was translated following the guideline for cross-cultural adaptation of self-report measures. The reliability and validity was examined in 139 persons with SCI. For the test-retest reliability, 30 participants completed the Thai version of the IPA twice with a 2-week interval. [Results] The translated questionnaire and its items had moderate to good reliability, with the ICC((3,1)) ranging from 0.76 to 0.93. The internal consistency for all domains was high, with Cronbach's alpha ranging from 0.86 to 0.90. The convergent validity, discriminant validity, and construct validity were supported. [Conclusion] The Thai version of the IPA is a reliable and valid instrument for assessing the level of community participation in Thai persons with spinal cord injury.