Translation, cross-cultural adaptation and validation of the traditional Chinese intermittent and constant osteoarthritis pain (ICOAP) questionnaire for knee osteoarthritis

ObjectivesTo translate and culturally adapt the Intermittent and Constant Osteoarthritis and Pain (ICOAP) measure to a traditional Chinese version, and to study its psychometric properties in patients with knee osteoarthritis (KOA).MethodThe ICOAP was translated and cross-culturally adapted into tra...

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Bibliographic Details
Published in:BMJ open 2019-03, Vol.9 (3), p.e026006-e026006
Main Authors: Sit, Regina Wing Shan, Chan, Dicken Cheong Chun, Wong, Wendy, Yip, Benjamin Hon Kei, Chow, Lyan Lai Yan, Wong, Samuel Y S
Format: Article
Language:English
Subjects:
Adaptation
Arthritis
Asian Continental Ancestry Group - ethnology
Chronic Pain - diagnosis
Chronic Pain - ethnology
Cross-Cultural Comparison
Female
Health surveys
Hong Kong - ethnology
Humans
Knee
Male
Middle Aged
Musculoskeletal Pain - diagnosis
Musculoskeletal Pain - ethnology
Osteoarthritis
Osteoarthritis, Knee - ethnology
Pain
Pain Measurement - standards
Patient assessment
Patients
Quality of life
Quantitative psychology
Questionnaires
Reproducibility of Results
Rheumatology
Severity of Illness Index
Surveys and Questionnaires
Translations
Validity
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Summary:ObjectivesTo translate and culturally adapt the Intermittent and Constant Osteoarthritis and Pain (ICOAP) measure to a traditional Chinese version, and to study its psychometric properties in patients with knee osteoarthritis (KOA).MethodThe ICOAP was translated and cross-culturally adapted into traditional Chinese according to the recommended international guidelines. A total of 110 participants with KOA in Hong Kong were invited to complete the traditional Chinese ICOAP (tChICOAP), the Chinese Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain subscale and the Chinese Short form of Health Survey (SF-12v2). Psychometric evaluations included content validity, construct validity, internal consistency and test and retest reliability.ResultsAll participants completed the tChICOAP questionnaire without missing items. The content validity index of all items ranged from 80% to 100%. The tChICOAP total pain and subscale scores had excellent internal consistency with Cronbach’s alpha value (0.902–0.948) and good corrected item-total subscale correlations. It had high test and retest reliability (intra-class correlations 0.924–0.960). The tChICOAP constant, intermittent and total pain scores correlate strongly with the WOMAC pain subscale (r=0.671, 0.678 and 0.707, respectively, p
ISSN:2044-6055
2044-6055
DOI:10.1136/bmjopen-2018-026006