{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T07:18:17Z","timestamp":1776496697203,"version":"3.51.2"},"reference-count":25,"publisher":"Springer Science and Business Media LLC","issue":"11","license":[{"start":{"date-parts":[[2024,8,13]],"date-time":"2024-08-13T00:00:00Z","timestamp":1723507200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,8,13]],"date-time":"2024-08-13T00:00:00Z","timestamp":1723507200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"University of Bergen"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Eur Spine J"],"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>To evaluate the responsiveness of the original low back pain specific Oswestry Disability Index (ODI) and the spinal stenosis specific Z\u00fcrich Claudication Questionnaire (ZCQ), and to investigate cut-off values for clinical \u201csuccess\u201d for ODI and ZCQ in surgically treated patients with lumbar spinal stenosis (LSS).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>We included 601 LSS patients (218 with, 383 without degenerative spondylolisthesis) from the NORDSTEN trials. Outcome measures included ODI and ZCQ (symptom severity and physical function scales) with three alternative response parameters: scores at follow-up, absolute and relative changes from baseline to two-year follow-up. Effect size and standardised response mean evaluated internal responsiveness. External responsiveness was assessed by the Spearman rank correlation between patient-reported global perceived effect scale (GPE) and ODI and ZCQ, and receiver operating characteristics (ROC). We evaluated which cut-off values could maximise the percentage of correctly classified patients according to the GPE-anchor \u201ccompletely recovered\u201d \/ \u201cmuch improved\u201d for each parameter.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Internal and external responsiveness were high for all three indices with effect sizes, standardized response means, ROC and corresponding area under the curve\u2009&gt;\u20090.8. Correlations with GPE responses were moderate (&gt;\u20090.50) for absolute change and strong (&gt;\u20090.67) for relative change and follow-up scores. The 30% ODI relative change cut-off correctly classified 81% of patients to \u201csuccess\u201d, within a range of accurate cut-offs according to the GPE-anchor.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>ODI and ZCQ demonstrate comparable responsiveness in evaluating outcomes for surgically treated LSS patients. The 30% ODI threshold was consistent with treatment \u201csuccess\u201d in NORDSTEN trials.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Trial registration<\/jats:title>\n                <jats:p>ClinicalTrials.gov; NCT02007083 10\/12\/2013, NCT02051374 31\/01\/2014 and NCT03562936 20\/06\/2018.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00586-024-08440-1","type":"journal-article","created":{"date-parts":[[2024,8,13]],"date-time":"2024-08-13T03:43:43Z","timestamp":1723520623000},"page":"4270-4280","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Responsiveness of the Oswestry Disability Index and Zurich Claudication Questionnaire in patients with lumbar spinal stenosis: evaluation of surgically treated patients from the NORDSTEN study"],"prefix":"10.1007","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9636-9712","authenticated-orcid":false,"given":"Kari","family":"Indrekvam","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tor \u00c5ge","family":"Myklebust","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ivar Magne","family":"Austevoll","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erland","family":"Hermansen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hasan","family":"Banitalebi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ingrid Fjeldheim","family":"B\u00e5nerud","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Clemens","family":"Weber","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helena","family":"Brisby","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jens Ivar","family":"Brox","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Hellum","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kjersti","family":"Storheim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,8,13]]},"reference":[{"issue":"22","key":"8440_CR1","doi-asserted-by":"publisher","first-page":"1737","DOI":"10.1097\/BRS.0000000000002207","volume":"42","author":"GC Machado","year":"2017","unstructured":"Machado GC et al (2017) Trends, complications, and costs for hospital admission and surgery for lumbar spinal stenosis. 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BMC Musculoskelet Disord 24(1):164","journal-title":"BMC Musculoskelet Disord"}],"container-title":["European Spine Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00586-024-08440-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00586-024-08440-1\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00586-024-08440-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,2]],"date-time":"2024-11-02T16:03:44Z","timestamp":1730563424000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00586-024-08440-1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,8,13]]},"references-count":25,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2024,11]]}},"alternative-id":["8440"],"URL":"https:\/\/doi.org\/10.1007\/s00586-024-08440-1","relation":{},"ISSN":["0940-6719","1432-0932"],"issn-type":[{"value":"0940-6719","type":"print"},{"value":"1432-0932","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,8,13]]},"assertion":[{"value":"24 April 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"24 April 2024","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"30 July 2024","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"13 August 2024","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The Norwegian Committees for Medical and Health Research Ethics approved the trials (NORDTEN-SST trial and NORDSTEN-OC; 2011\/2034, NORDSTEN-DS trial; 2013\/366). Data protection was approved by the Norwegian Data Inspectorate and data are stored at \u201cServices for sensitive data\u201d (TSD) hosted by the University of Oslo, to allow secure data sharing between researchers. Informed consent was obtained from patients after oral and written information. The study was performed according to the Helsinki Declaration and registered at ClinicalTrials.gov under the following identifiers; SST: NCT02007083 10\/12\/2013 \/ DS: NCT02051374 31\/01\/2014 \/ OC: NCT03562936 20\/06\/2018. The trial is monitored according to requirements of the Good Clinical Practice (GCP) guidelines.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"The authors declare that they have no financial or non-financial that are directly or indirectly related to the work submitted for publication.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}