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- Clinical Trial A Pilot Study on the Validity and Reliability of the Korean Version of the Oswestry Disability Index in a Farming Community
- No Yul Yang, Hae Yean Park, Jin Su Kim, Joo Hyun Lee, Soo Hyun Park, Min Ye Jung, Sang Baek Koh
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DOI: https://doi.org/10.35371/kjoem.2010.22.4.290
Published online: December 31, 2010
1Department of Rehabilitation, The Graduate School, Yonsei University, Korea. 
2Department of Occupational Therapy, College of Health Sciences, Yonsei University, Korea. parksoohyun@yonsei.ac.kr
3Department of Preventive Medicine and Institute of Occupational and Environmental Medicine, Yonsei University Wonju College of Medicine, Korea.
2Department of Occupational Therapy, College of Health Sciences, Yonsei University, Korea. parksoohyun@yonsei.ac.kr
3Department of Preventive Medicine and Institute of Occupational and Environmental Medicine, Yonsei University Wonju College of Medicine, Korea.
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Abstract
OBJECTIVES
The Korean version of the Oswestry Disability Index (ODI) is the most widely used tool validated instrument for measuring and the level of disability associated with low back disorders. We wanted to validate use of the Korean version of the ODI in Korean farmers with low back pain.
METHODS
The object of this study was to examine the reliability and validity of the Korean version of the ODI. The Korean version was tested on 53 farmers (62.3+/-10.3 years of age) with low back-related disorders. We investigated the Test-retest reliability, internal consistency, and construct validity of the ODI. The Test-retest reliability was assessed in 30 farmers within a time interval of approximately 14 to 18 days. Differences between the Korean version of the ODI and the Short Form 12 (SF-12), which includes 8 domains (general health, physical functioning, role-physical limitation, bodily pain, role-emotional limitation, mental health, vitality, social functioning) were analyzed for construct validity. The correlation of the Korean version of the ODI with the SF-12 was analyzed, as well.
RESULTS
The intra-class correlation coefficient of test-retest reliability was 0.854. Reliability estimated by the internal consistency reached a Cronbach's alpha of 0.879. The correlation between 7 domains of the SF-12 except for the mental health domain and the Korean version of the ODI was statistically significant (p<0.05). Four domains (general health, physical functioning, role-physical limitation, bodily pain) that measured physical status all showed high correlations (p<0.01), as did a domain that measured mental status (role-emotional limitation) (p<0.01).
CONCLUSIONS
The results showed that the Korean version of the ODI is a reliable and valid instrument to measure the level of disability in Korean farmers with low back-related disorders. The use of this instrument is recommended for future clinical trials in Korea.
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