https://www.semanticscholar.org/topic/The-Oswestry-Disability-Index-Version-2.1a/8152049
The Oswestry Disability Index Version 2.1a Questionnaire | Semantic Scholar
A standardized survey initially developed by John O'Brien in 1976 then published in 1980 by Jeremy Fairbank. This version (2.1a) is copyrighted by Jeremy...
oswestry disability indexversion 21aquestionnairesemantic
https://pmc.ncbi.nlm.nih.gov/articles/PMC2647244/
Oswestry Disability Index Scoring Made Easy - PMC
Low back pain effects up to 80% of the population at some time during their active life. Questionnaires are available to help measure pain and disability. The...
oswestry disability indexmade easyscoringpmc