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dc.contributor.authorKaur, Simran
dc.contributor.authorAlhaug, Ole Kristian
dc.contributor.authorDolatowski, Filip Celestyn
dc.contributor.authorSolberg, Tore
dc.contributor.authorLønne, Greger
dc.date.accessioned2023-09-04T06:12:31Z
dc.date.available2023-09-04T06:12:31Z
dc.date.issued2023-03-04
dc.description.abstractBackground Loss to follow-up may bias outcome assessments in medical registries. This cohort study aimed to analyze and compare patients who failed to respond with those that responded to the Norwegian Registry for Spine Surgery (NORspine).<p> <p>Methods We analyzed a cohort of 474 consecutive patients operated for lumbar spinal stenosis at four public hospitals in Norway during a two-year period. These patients reported sociodemographic data, preoperative symptoms, and Oswestry Disability Index (ODI), numerical rating scales (NRS) for back and leg pain to NORspine at baseline and 12 months postoperatively. We contacted all patients who did not respond to NORspine after 12 months. Those who responded were termed responsive non-respondents and compared to 12 months respondents. <p>Results One hundred forty (30%) did not respond to NORspine 12 months after surgery and 123 were available for additional follow-up. Sixty-four of the 123 non-respondents (52%) responded to a cross-sectional survey done at a median of 50 (36–64) months after surgery. At baseline, non-respondents were younger 63 (SD 11.7) vs. 68 (SD 9.9) years (mean difference (95% CI) 4.7 years (2.6 to 6.7); p= <0.001) and more frequently smokers 41 (30%) vs. 70 (21%) RR (95%CI)=1.40 (1.01 to 1.95); p=0.044. There were no other relevant differences in other sociodemographic variables or preoperative symptoms. We found no differences in the effect of surgery on non-respondents vs. respondents (ODI (SD)=28.2 (19.9) vs. 25.2 (18.9), MD (95%CI)=3.0 ( -2.1 to 8.1); p=0.250). <p>Conclusion We found that 30% of patients did not respond to NORspine at 12 months after spine surgery. Non-respondents were somewhat younger and smoked more frequently than respondents; however, there were no differences in patient-reported outcome measures. Our findings suggest that attrition bias in NORspine was random and due to non-modifable factors.en_US
dc.identifier.citationKaur, Alhaug, Dolatowski, Solberg, Lønne. Characteristics and outcomes of patients who did not respond to a national spine surgery registry. BMC Musculoskeletal Disorders. 2023;24:164:1-7en_US
dc.identifier.cristinIDFRIDAID 2136953
dc.identifier.doi10.1186/s12891-023-06267-3
dc.identifier.issn1471-2474
dc.identifier.urihttps://hdl.handle.net/10037/30638
dc.language.isoengen_US
dc.publisherBMCen_US
dc.relation.journalBMC Musculoskeletal Disorders
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleCharacteristics and outcomes of patients who did not respond to a national spine surgery registryen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)