An Outcome Measure of Functionality and Pain in Patients with Low Back Disorder: A Validation Study of the Iranian version of Low Back Outcome Score.
10.4184/asj.2016.10.4.719
- Author:
Parisa AZIMI
1
;
Hossein NAYEB AGHAEI
;
Shirzad AZHARI
;
Sohrab SHAZADI
;
Hamid KHAYAT KASHANY
;
Hassan Reza MOHAMMADI
;
Ali MONTAZERI
Author Information
1. Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. parisa.azimi@gmail.com
- Publication Type:Original Article
- Keywords:
Iran;
Low back outcome score;
Validity;
Low back pain
- MeSH:
Back Pain;
Cohort Studies;
Cross-Sectional Studies;
Diagnosis;
Hernia;
Humans;
Iran;
Low Back Pain;
Outcome Assessment (Health Care)*;
Psychometrics;
Reproducibility of Results
- From:Asian Spine Journal
2016;10(4):719-727
- CountryRepublic of Korea
- Language:English
-
Abstract:
STUDY DESIGN: Cross-sectional study. PURPOSE: This study aimed to cross-culturally translate and validate the low back outcome score (LBOS) in Iran. OVERVIEW OF LITERATURE: Lumbar disc hernia (LDH) is the most common diagnoses of low back pain and imposes a heavy burden on both individual and society. Instruments measuring patient reported outcomes should satisfy cetain psychometric properties. METHODS: The translation and cross-cultural adaptation of the original questionnaire was performed using Beaton's guideline. A total of 163 patients with LDH were asked to respond to the questionnaire at three points in time: preoperative and twice within 1-week interval after surgery assessments. The Oswestry disabilty index (ODI) was also completed. The internal consistency, test-retest, convergent validity, and responsiveness to change were assessed. Responsiveness to change also was assessed comparing patients' pre- and postoperative scores. RESULTS: The mean age of the cohort was 49.8 years (standard deviation=10.1). The Cronbach's alpha coefficients for the LBOS at preoperative and postoperative assessments ranged from 0.77 to 0.79, indicating good internal consistency. Test-retest reliability as performed by intraclass correlation coefficient was found to be 0.82 (0.62–0.91). The instrument discriminated well between sub-groups of patients who differed in the Finneson-Cooper score. The ODI correlated strongly with the LBOS score, lending support to its good convergent validity (r=––0.83; p<0.001). Further analysis also indicated that the questionnaire was responsive to change (p<0.001). CONCLUSIONS: The Iranian version of LBOS performed well and the findings suggest that it is a valid measure of back pain treatment evaluation among LDH patients.
