Evidence map›Paper›PMID 28646454›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2017

The Oswestry Disability Index, confirmatory factor analysis in a sample of 35,263 verifies a one-factor structure but practicality issues remain.

Charles Philip Gabel, Antonio Cuesta-Vargas, Meihua Qian, Rok Vengust, Ulrich Berlemann, Emin Aghayev, Markus Melloh

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In one paragraph

Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  9. Cross-cultural adaptation and psychometric validation of the Indonesian version of the Oswestry Disability Index.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2021
    Article
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  11. Prediction of Oswestry Disability Index (ODI) using PROMIS-29 in a national sample of lumbar spine surgery patients.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2019
    Article
  12. Validation of the Croatian version of the Oswestry Disability Index.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2018
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  13. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Charles Philip GabelCoolum Physiotherapy Sunshine Coast, Coolum Beach, Queensland, Australia.
Antonio Cuesta-VargasDepartment of Physiotherapy, Faculty of Medicine, Malaga University, Malaga, Spain.
Meihua QianDepartment of Education and Human Development, College of Education, Clemson University, 410 Tillman Hall, Clemson, SC, 29634, USA. mqian@g.clemson.edu.ORCID 0000-0002-9383-7939
Rok VengustDepartment of Orthopaedic Surgery, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Ulrich BerlemanndasRückenzentrum, Standort Salem-Spital, Bern, Switzerland.
Emin AghayevSwiss RDL, Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
Markus MellohInstitute for Health Sciences, School of Health Professions, Zurich University of Applied Sciences, Winterthur, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo analyze the factor structure of the Oswestry Disability Index (ODI) in a large symptomatic low back pain (LBP) population using exploratory (EFA) and confirmatory factor analysis (CFA).

methodsAnalysis of pooled baseline ODI LBP patient data from the international Spine Tango registry of EUROSPINE, the Spine Society of Europe. The sample, with n = 35,263 (55.2% female; age 15-99, median 59 years), included 76.1% of patients with a degenerative disease, and 23.9% of the patients with various other spinal conditions. The initial EFA provided a hypothetical construct for consideration. Subsequent CFA was considered in three scenarios: the full sample and separate genders. Models were compared empirically for best fit.

resultsThe EFA indicated a one-factor solution accounting for 54% of the total variance. The CFA analysis based on the full sample confirmed this one-factor structure. Sub-group analyses by gender achieved good model fit for configural and partial metric invariance, but not scalar invariance. A possible two-construct model solution as outlined by previous researchers: dynamic-activities (personal care, lifting, walking, sex and social) and static-activities (pain, sleep, standing, travelling and sitting) was not preferred.

conclusionsThe ODI demonstrated a one-factor structure in a large LBP sample. A potential two-factor model was considered, but not found appropriate for constructs of dynamic and static activity. The use of the single summary score for the ODI is psychometrically supported. However, practicality limitations were reported for use in the clinical and research settings. Researchers are encouraged to consider a shift towards newer, more sensitive and robustly developed instruments.

Indexed as

Disability EvaluationPatient Reported Outcome MeasuresAdolescentAdultAgedAged, 80 and overEuropeFactor Analysis, StatisticalFemaleHumansLow Back PainMaleMiddle AgedPsychometricsRegistriesReproducibility of ResultsConfirmatory factor analysisOswestry Disability IndexPatient-reported outcome instrumentRegistrySpine TangoValidation

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.