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dc.contributor.authorSolberg, Tore
dc.contributor.authorJohnsen, Lars Gunnar
dc.contributor.authorNygaard, Øystein Petter
dc.contributor.authorGrotle, Margreth
dc.date.accessioned2019-10-25T10:43:41Z
dc.date.available2019-10-25T10:43:41Z
dc.date.created2013-06-28T10:53:04Z
dc.date.issued2013
dc.identifier.citationActa Orthopaedica. 2013, 84 (2), 196-201.nb_NO
dc.identifier.issn1745-3674
dc.identifier.urihttp://hdl.handle.net/11250/2624424
dc.description.abstractBackground and purpose A successful outcome after lumbar discectomy indicates a substantial improvement. To use the cutoffs for minimal clinically important difference (MCID) as success criteria has a large potential bias, simply because it is difficult to classify patients who report that they are “moderately improved”. We propose that the criteria for success should be defined by those who report that they are “completely recovered” or “much better”. Methods A cohort of 692 patients were operated for lumbar disc herniation and followed for one year in the Norwegian Registry for Spine Surgery. The global perceived scale of change was used as an external criterion, and success was defined as those who reported that they were “completely recovered” or “much better”. Criteria for success for each of (1) the Oswestry disability index (ODI; score range 0–100 where 0 = no disability), (2) the numerical pain scale (NRS; range 0–10 where 0 = no pain) for back and leg pain, and (3) the Euroqol (EQ-5D; –0.6 to 1 where 1 = perfect health) were estimated by defining the optimal cutoff point on receiver operating characteristic curves. Results The cutoff values for success for the mean change scores were 20 (ODI), 2.5 (NRS back), 3.5 (NRS leg), and 0.30 (EQ-5D). According to the cutoff estimates, the proportions of successful outcomes were 66% for the ODI and 67% for the NRS leg pain scale. Interpretation The sensitivity/specificity values for the ODI and leg pain were acceptable, whereas they were very low for the EQ-5D. The cutoffs for success can be used as benchmarks when comparing data from different surgical units.nb_NO
dc.language.isoengnb_NO
dc.publisherTaylor & Francisnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleCan we define success criteria for lumbar disc surgery? Estimates for a substantial amount of improvement in core outcome measuresnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber196-201nb_NO
dc.source.volume84nb_NO
dc.source.journalActa Orthopaedicanb_NO
dc.source.issue2nb_NO
dc.identifier.doi10.3109/17453674.2013.786634
dc.identifier.cristin1037086
dc.description.localcodeOpen Access - This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the source is credited.nb_NO
cristin.unitcode1920,16,0,0
cristin.unitcode194,65,30,0
cristin.unitnameNevroklinikken
cristin.unitnameInstitutt for nevromedisin og bevegelsesvitenskap
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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