The purposes of this study were to conduct cross-cultural adaptation of the Functional Rating Index (FRI), to test psychometric properties of the translated questionnaire and to examine head-to-head comparisons with other questionnaires.
This study comprised 2 major stages: 1) Cross-cultural adaptation and 2) psychometric properties testing. Cross-cultural adaptation stage: The FRI was cross-culturally adapted to Thai following the well-accepted guideline for the process of cross-cultural adaptation of self-report measure. Psychometric properties testing stage: The patients with back or neck pain completed the questionnaires at the first visit, the second visit and at 2-week (or at discharge or when reporting 80% improvement from the first visit).
Study Type
OBSERVATIONAL
Enrollment
247
Cross-cultural adaptation stage: The FRI was cross-culturally adapted to Thai (called the Thai FRI) and the pre-final version of the Thai FRI was administered to patients. Psychometric properties testing stage: The questionnaires were administered 3 times: the first visit, the second visit and at 2 weeks. At the first visit: the patients with back pain completed the Thai FRI , Thai Roland-Morris Disability (Thai RM), Thai modified Oswestry Low Back Pain Disability (Thai modified ODQ), Thai multi-level Roland-Morris Disability (Thai multi-level RM). The patients with neck pain completed the Thai FRI and Thai Neck Disability Index. At the second visit: all patients completed the Thai FRI and Global Perceived Effect Scale (GPES). At 2 weeks: the patients completed the same questionnaires as the first visit. All patients and their treating physical therapists completed the GPES.
questionnaire scores at the first visit
Back pain group: questionnaire scores from the Thai FRI, Thai RM, Thai modified ODQ, Thai multi-level RM; Neck pain group: questionnaire scores from the Thai FRI and Thai Neck Disability Index
Time frame: 20-25 minutes each time
questionnaire scores at the second visit
questionnaire scores from the Thai FRI
Time frame: 5 minutes each time
Global Perceived Effect Scale (GPES) at the second visit
7-point GPES
Time frame: 3 minutes each time
questionnaire scores at 2 weeks
Back pain group: questionnaire scores from the Thai FRI, Thai RM, Thai modified ODQ, Thai multi-level RM; Neck pain group: Thai FRI, Thai Neck Disability Index
Time frame: 20-25 minutes each time
Global Perceived Effect Scale (GPES) at 2 weeks
7-point GPES
Time frame: 3 minutes each time
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