Cross-cultural adaptation and clinimetric property of Korean version of the Chronic Pain Coping Inventory-42 in patients with chronic low back pain.
METHODS
Validation of a translated, culturally adapted questionnaire.


OBJECTIVE
We developed a Korean version of the Chronic Pain Coping Inventory-42 (CPCI-42) by performing a cross-cultural adaptation, and evaluated its reliability and validity.


BACKGROUND
The CPCI is widely used and validated instruments for measuring coping strategies in chronic pain. However, no validated and culturally adapted version was available in Asian countries.


METHODS
We assessed 142 patients with chronic low back pain using the CPCI-42 and measures of physical disability, pain, and quality of life. Results for 93 of the 142 patients exhibited test-retest reliability. The interval time of collecting retest data varied from 2 weeks to 1 month. Criterion validity was evaluated using correlations between the CPCI-42 and the Oswestry Disability Index, the Brief Pain Inventory, and the Short Form 36-item Health Survey (version 2.0). Construct validity was computed using exploratory factor analysis.


RESULTS
The Korean version of the CPCI-42 had a high internal consistency (Cronbach's alpha >0.70) with the exception of results for task persistence and relaxation. Illness-focused coping (guarding, resting, asking for assistance) and other-focused coping (seeking social support) were most significantly correlated with Oswestry Disability Index, Brief Pain Inventory, and Short Form 36-item Health Survey, respectively. Outcomes for task persistence were contrary to other subscales in wellness-focused coping. Construct validity by factor analysis produced similar results to the original CPCI subscale. However, several factors showed cross-loading in 8 factor solutions.


CONCLUSIONS
Despite linguistic and cultural differences, the Korean version of the CPCI-42 is overall a meaningful tool, and produces results sufficiently similar to the original CPCI-42.
From the *Dongguk University-Seoul, Seoul, Korea; †Department of Rehabilitation Medicine, Incheon Sarang Hospital, Incheon, Korea; and ‡Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seoul, Korea.
Young-Mi
YM
Ko
Won-Beom
WB
Park
Jae-Young
JY
Lim
D000223:Adaptation, Psychological; D000328:Adult; D044466:Asian People; D002908:Chronic Disease; D059350:Chronic Pain / Q000175:diagnosis / Q000208:ethnology / Q000523:psychology*; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D007802:Language; D017116:Low Back Pain / Q000175:diagnosis / Q000208:ethnology / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011788:Quality of Life; D015203:Reproducibility of Results; D056910:Republic of Korea; D011795:Surveys and Questionnaires / Q000592:standards*; D014177:Translations