Psychometric evaluation of the Oswestry Disability Index in patients with chronic low back pain: factor and Mokken analyses

Health and Quality of Life Outcomes

Research

Tsai-Sheng Fu¹  Chin-Pang Lee²  Ching-I Hung²  Chia-Yih Liu² 

[1] Department of Orthopaedics, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan;School of Medicine, Chang Gung University, 5, Fusing Street, Gueishan District, 33305, Taoyuan, Taiwan;Department of Psychiatry, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan;School of Medicine, Chang Gung University, 5, Fusing Street, Gueishan District, 33305, Taoyuan, Taiwan;

关键词: The Oswestry Disability Index (ODI);    Psychometrics;    Validity;    Reliability;    Dimensionality;    Low back pain;   

DOI  :  10.1186/s12955-017-0768-8

 received in 2017-05-01, accepted in 2017-09-26,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundDisputes exist regarding the psychometric properties of the Oswestry Disability Index (ODI). The present study was to examine the reliability, validity, and dimensionality of a Chinese version of the ODI version 2.1 in a sample of 225 adult orthopedic outpatients with chronic low back pain [mean age (SD): 40.7 (11.4) years].MethodsWe conducted reliability analysis, exploratory bifactor analysis, confirmatory factor analysis, and Mokken scale analysis of the ODI. To validate the ODI, we used the Short-Form 36 questionnaire (SF-36) and visual analog scale (VAS).ResultsThe reliability, and discriminant and construct validities of the ODI was good. The fit statistics of the unidimensional model of the ODI were inadequate. The ODI was a weak Mokken scale (Hs = 0.31).ConclusionsThe ODI was a reliable and valid scale suitable for measurement of disability in patients with low back pain. But the ODI seemed to be multidimensional that was against the use of the raw score of the ODI as a measurement of disability.

【 授权许可】

CC BY   
© The Author(s). 2017