Transcultural adaptation and validation of a Korea version of Pedi-IKDC questionnaire

Woo Sub Kim; Seung Hyun Won; Seo Ho Moon; Min Joon Oh; Moon Seok Park; Ki Hyuk Sung

doi:10.1186/s13690-023-01236-7

Transcultural adaptation and validation of a Korea version of Pedi-IKDC questionnaire

Arch Public Health. 2024 Jan 18;82(1):10. doi: 10.1186/s13690-023-01236-7.

Authors

Woo Sub Kim¹, Seung Hyun Won², Seo Ho Moon³, Min Joon Oh¹, Moon Seok Park¹, Ki Hyuk Sung⁴

Affiliations

¹ Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-Gu, 13620, Sungnam, Gyeonggi, Korea.
² Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital, Gyeonggi, Korea.
³ Department of Pathology, Duke University School of Medicine, Durham, NC, USA.
⁴ Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-Gu, 13620, Sungnam, Gyeonggi, Korea. skh1219@naver.com.

Abstract

Background: This study aimed to translate and transculturally adapt the English version of the Pedi-IKDC questionnaire into Korean and evaluate the psychometric properties of the Korean Pedi-IKDC questionnaire in terms of internal consistency, feasibility (floor and ceiling effect), construct validity, test-retest reliability, and factor analysis.

Methods: The original English version of the Pedi-IKDC questionnaire was translated and transculturally adapted into Korean according to established guidelines. A total of 239 patients aged 7-18 years who visited the hospital because of knee pain or discomfort were considered eligible for the study. These patients completed the Korean version of the Pedi-IKDC and Pediatric Quality of Life questionnaires (PedsQL). The correlation between the PedsQL and Pedi-IKDC questionnaires was assessed to confirm the validity of the questionnaire. To verify the validity of the Korean Pedi-IKDC questionnaire, internal consistency, feasibility, test-retest reliability, and construct validity were evaluated, and a factor analysis was performed.

Results: Internal consistency was found to be satisfactory in all subscales (Cronbach's alpha ≥ 0.7). The test-retest reliability was satisfactorily high for all subscales (Intraclass correlation coefficient: 0.81-0.84). A high correlation was observed between the total Pedi-IKDC score and the score on the physical-health subscale of child version of the PedsQL (Correlation coefficients: 0.720). There were no floor effects in all subscales, but ceiling effects were observed in four questions. Additionally, factor analysis suggested that the questionnaire could be divided into two subscales.

Conclusion: The Korean version of the Pedi-IKDC questionnaire was successfully translated and transculturally adapted according to the established guidelines. The Korean Pedi-IKDC questionnaire has been proven reliable and valid.

Keywords: Pedi-IKDC; Transcultural adaptation; Translation; Validation.