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dc.contributor.authorGabel, Charles Philip
dc.contributor.authorCuesta-Vargas, Antonio
dc.contributor.authorQian, Meihua
dc.contributor.authorVengust, Rok
dc.contributor.authorBerlemann, Ulrich
dc.contributor.authorAghayev, Emin
dc.contributor.authorMelloh, Markus
dc.description.abstractTo 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). Analysis 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. The 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. The 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.
dc.subjectConfirmatory factor analysis
dc.subjectOswestry Disability Index
dc.subjectPatient-reported outcome instrument
dc.subjectSpine Tango
dc.subject.meshAged, 80 and over
dc.subject.meshDisability Evaluation
dc.subject.meshFactor Analysis, Statistical
dc.subject.meshLow Back Pain
dc.subject.meshMiddle Aged
dc.subject.meshPatient Reported Outcome Measures
dc.subject.meshReproducibility of Results
dc.subject.meshYoung Adult
dc.titleThe Oswestry Disability Index, confirmatory factor analysis in a sample of 35,263 verifies a one-factor structure but practicality issues remain.
dc.typeresearch article
dc.rights.accessRightsopen access
dc.journal.titleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
dc.journal.titleabbreviationEur Spine J
dc.pubmedtypeJournal Article
Appears in Collections:Producción 2020

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