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Reliability and validity of Oswestry Disability Index among patients undergoing lumbar spinal surgery – Lumbar Spinal Stenosis

The article examines the internal consistency and factor structure of the Oswestry Disability Index (ODI) in patients undergoing spinal surgery. The study includes 1,515 patients who underwent lumbar spinal surgery at a university hospital between 2018 and 2021. The patients completed the ODI questionnaire prior to surgery. Results showed that the ODI had good internal consistency, with an alpha of 0.87. Exploratory factor analysis revealed a unidimensional structure, and confirmatory factor analysis confirmed the adequacy of the model. The most important items in defining disability severity were “traveling,” “social life,” “sex life,” and “personal care,” while “walking” and “standing” were the least important items. The study concludes that the ODI is a reliable tool for assessing disability in patients undergoing lumbar spinal surgery, although the generalizability of the results may be limited by the size and heterogeneity of the study cohort

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
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Published article

CONCLUSIONS: The Oswestry Disability Index is a unidimensional and internally consistent scale that can be used to assess the severity of disability in patients undergoing lumbar spinal surgery. In the studied population, “traveling,” “social life,” “sex life” and “personal care” were the most important items to define the severity of disability, while “walking” and “standing” were the least important items. The generalizability of the results might be affected by the heterogeneity and modest…

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BMC Surg. 2024 Jan 3;24(1):13. doi: 10.1186/s12893-023-02307-w.ABSTRACTBACKGROUND: The objective of this study was to explore the internal consistency and factor structure of the Oswestry Disability Index among patients undergoing spinal surgery. The sample consisted of 1,515 patients who underwent lumbar spinal surgery at a university hospital between 2018 and 2021.METHODS: The patients responded to the,

BMC Surg. 2024 Jan 3;24(1):13. doi: 10.1186/s12893-023-02307-w.

ABSTRACT

BACKGROUND: The objective of this study was to explore the internal consistency and factor structure of the Oswestry Disability Index among patients undergoing spinal surgery. The sample consisted of 1,515 patients who underwent lumbar spinal surgery at a university hospital between 2018 and 2021.

METHODS: The patients responded to the Oswestry Disability Index within 2 months before surgery. Cronbach’s alpha was used to assess the internal consistency. The factor structure was evaluated using exploratory and confirmatory factor analyses.

RESULTS: The average age of 1,515 patients was 58.5 (SD 15.8) years and 53% were women. The mean ODI score was 43.4% (SD 17.4%). Of the patients, 68% underwent microsurgical excision of the lumbar intervertebral disc displacement or decompression of the lumbar nerve roots. The internal consistency of the Oswestry Disability Index was found to be good, with an alpha of 0.87 (95% CL 0.86 to 0.88). Exploratory factor analysis resulted in unidimensional structure. Item loadings on this retained factor were moderate to substantial for all 10 items. One-factor confirmatory factor analysis model demonstrated an acceptable fit. The correlations between the main factor “disability” and the individual items varied from moderate (0.44) to substantial (0.76). The highest correlations were observed for items “traveling”, “personal care”, and “social life”. The lowest correlations were observed for the item “standing”.

CONCLUSIONS: The Oswestry Disability Index is a unidimensional and internally consistent scale that can be used to assess the severity of disability in patients undergoing lumbar spinal surgery. In the studied population, “traveling,” “social life,” “sex life” and “personal care” were the most important items to define the severity of disability, while “walking” and “standing” were the least important items. The generalizability of the results might be affected by the heterogeneity and modest size of the studied cohort.

TRIAL REGISTRATION: Not applicable.

PMID:38172794 | DOI:10.1186/s12893-023-02307-w

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Reliability and validity of Oswestry Disability Index among patients undergoing lumbar spinal surgery

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BMC Surg. 2024 Jan 3;24(1):13. doi: 10.1186/s12893-023-02307-w.ABSTRACTBACKGROUND: The objective of this study was to explore the internal consistency and factor structure of the Oswestry Disability Index among patients undergoing spinal surgery. The sample consisted of 1,515 patients who underwent lumbar spinal surgery at a university hospital between 2018 and 2021.METHODS: The patients responded to the

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