[Validating the Oswestry Disability Index in patients with low back pain in Sichuan].
OBJECTIVE
To test the reliability and validity of the Oswestry Disability Index (ODI) in patients with low back pain in China.


METHODS
Eighty six patients (female 51, male 35, average age 39.5 +/- 10.1) with chronic low back pain were assessed with the ODI. The assessment was repeated 48 hours after the first test.


RESULTS
The Cronbach' Alpha coefficient for the ODI was 0.891. The intraclass correlation coefficient (ICC) for the repeated tests was 0.854 (95% CI = 0.775-0.905). The exploratory factor analysis extracted two factors, which accounted for 61.91% of the total variance. Significant correlations were found between the ODI and the 6 domains of the SF-36.


CONCLUSIONS
The Chinese version of Oswestry Disability Index has satisfactory reliability and validity. It can be used as an instrument for assessing chronic low back pain-related disability.
Tan
Ke
K
Department of Health Statistics, West China School of Public Health, Sichuan University, Chengdu 610041, China.
Zheng
Min
M
Yang
Bang-xiang
BX
Ernest
Volinn
V
Liu
Hui
H
He
Jing
J
Jiang
Min
M
Li
Xiao-song
XS
D000328:Adult; D002681:China; D003431:Cross-Cultural Comparison; D004185:Disability Evaluation; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011237:Predictive Value of Tests; D011795:Surveys and Questionnaires