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Thai version of the F unctional R ating I ndex for patients with back and neck pain: P art II responsiveness and head‐to‐head comparisons
Author(s) -
Chansirinukor Wunpen
Publication year - 2019
Publication title -
physiotherapy research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 49
eISSN - 1471-2865
pISSN - 1358-2267
DOI - 10.1002/pri.1751
Subject(s) - medicine , minimal clinically important difference , neck pain , physical therapy , receiver operating characteristic , oswestry disability index , low back pain , area under curve , randomized controlled trial , pathology , alternative medicine , pharmacokinetics
Objectives To examine responsiveness and estimate minimal clinically important difference (MCID) of the Thai version of Functional Rating Index (Thai FRI) and examine head‐to‐head comparisons of the Thai FRI and other questionnaires. Methods This study related to validation of a questionnaire and head‐to‐head comparisons. Patients with low back pain (LBP) completed the Thai FRI, Roland–Morris (RM), modified Oswestry, and multilevel RM disability questionnaires. Patients with neck pain (NP) completed the Thai FRI and Neck Disability Index at the first visit and 2‐week follow‐up. Patients and therapists rated Global Perceived Effect Scales (GPES). Effect size (ES), standardized response mean (SRM), correlations between the GPES with changes in questionnaire scores, and area under receiver operating characteristic curve (AUC) were calculated. The MCID was also estimated. Results Eighty‐four patients with LBP and 52 patients with NP completed the Thai FRI. ES = 1.34 for LBP; 1.28 for NP, SRM = 1.32 for LBP; 1.20 for NP, correlation = 0.49 for LBP; 0.38 for NP, AUC = 0.83 for both groups. MCID = 11.5 for LBP; 12.5 FRI points for NP. Conclusion The Thai FRI demonstrated responsiveness with large ES. Its MCID ranged from 11.5 to 12.5 FRI points. The Thai FRI had comparable responsiveness to other questionnaires and was appropriate for use in the patients with back and/or neck pain.