Chinese Version of Functional Index for Hand Osteoarthritis (FIHOA): Translation, validation and reliability study

Abstract Description

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Authors (including presenting author) :

Chan PSC(1), Tsang SWD(1), Lo HTS(1), Kong TSS(2), Lee HYH(2), Leung CMR(2), Liu TYJ(2), Luo WYW(2), Wong MWJ(2)

Affiliation :

(1) Occupational Therapy Department, Prince of Wales Hospital, (2) Department of Rehabilitation Science, Hong Kong Polytechnic University

Introduction :

Currently common assessments for hand osteoarthritis (OA) in Hong Kong are limited in reflecting functional performance of hand OA patients. Some of the current assessments are time-consuming and complicated in use. Methods: The English FIHOA was translated into Chinese version by two translators and content validity was established through expert panel evaluation. The Chinese FIHOA was finalized after pilot testing. The Chinese FIHOA was completed by 32 subjects, together with the Chinese Disability of Arm, Shoulder and Hand Outcome Questionnaire (DASH) and The Chinese Short Form Health Survey (SF-36) for evaluating the construct validity. 30 subjects completed the Chinese FIHOA again one week later. Test-retest reliability, internal consistency and Item-total correlation were then evaluated.

Objectives :

This study aims at translating and adapting the Functional Index of Hand Osteoarthritis (FIHOA) into Chinese version for Hong Kong culture. The validity, reliability and internal consistency of the translated Chinese FIHOA were evaluated.

Methodology :

The English FIHOA was translated into Chinese version by two translators and content validity was established through expert panel evaluation. The Chinese FIHOA was finalized after pilot testing. The Chinese FIHOA was completed by 32 subjects, together with the Chinese Disability of Arm, Shoulder and Hand Outcome Questionnaire (DASH) and The Chinese Short Form Health Survey (SF-36) for evaluating the construct validity. 30 subjects completed the Chinese FIHOA again one week later. Test-retest reliability, internal consistency and Item-total correlation were then evaluated.

Result & Outcome :

Results: Spearman’s Rho was used for analyzing construct validity. Significant high correlation (r=0.754, p< 0.05) between Chinese-FIHOA and DASH was observed. Significant negative correlation (r=-0.815, p< 0.05) between Chinese-FIHOA and SF-36 MCS was found on subjects with onset less than 1 year. No correlation (p>0.05) between the two questionnaires was found in subjects with onset more than 1 year. Item-item and Total-total ICC results showed good test-retest reliability. Cronbach’s alpha demonstrated high internal consistency and item-total correlation. Conclusions: The translated and validated Chinese-FIHOA is highly suitable for Hong Kong setting. Further study on sensitivity and validation of Chinese-FIHOA in Hong Kong population is recommended.