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Purpose: To determine if responses given to each question of the Scoliosis Research Society-22 (SRS22), Oswestry disability index (ODI) and Short Form-36 (SF-36) questionnaires are influenced by the radiological parameters.

Methods: Patients enrolled in a multi-centre prospectively collected adult spinal deformity database who had complete SRS22, ODI and SF-36 data at baseline and at one-year follow-up were analysed. The presence of a differential item function of each question within each score in relation to radiological parameters was analysed using a mixed Rasch model with the radiological threshold value(s) determined.

Results: Of those patients analysed (n = 1745; 1406 female, average age 51.0 ± 19.8 years), 944 were surgically and 801 were non-surgically treated. For the SRS22, questions (Q) 3, 5 and 18 were sensitive to almost all radiological parameters and the overall score was found sensitive to the Cobb angle. For the ODI, Q3, 6, 9 and 10 were not sensitive to any radiologic parameters whereas Q4 and 5 were sensitive to most. In contrast, only 3 of the SF-36 items were sensitive to radiological parameters.

Conclusions: 78% of the SRS-22, 60% of the ODI and 8% of the questions in the SF-36 are sensitive to radiological parameters. Sagittal imbalance is independently associated with a poor overall outcome, but affects mental status and function more than pain and self-image. The assembly of questions responsive to radiological parameters may be useful in establishing a connection between changes in radiologic parameters and HRQL.

Titel:	Impact of radiologic variables on item responses of ODI, SRS22 and SF-36. in adult spinal deformity patients: differential item functioning (DIF) analysis results from a multi-center database.
Autor/in / Beteiligte Person:	Kieser, DC ; Yuksel, S ; Boissiere, L ; Yilgor, C ; Cawley, DT ; Hayashi, K ; Alanay, A ; Kleinstueck, FS ; Pellise, F ; Perez-Grueso, FJS ; Jean-Marc, V ; Bourghli, A ; Acaroglu, ER ; Obeid, I
Link:	View record at Springer (Volltext)
Zeitschrift:	European spine journal : official publication of the European Spine Society, Jg. 31 (2022-05-01), Heft 5, S. 1166-1173
Veröffentlichung:	Heidelberg, Federal Republic of Germany : Springer-Verlag, c1992-, 2022
Medientyp:	academicJournal
ISSN:	1432-0932 (electronic)
DOI:	10.1007/s00586-021-07088-5
Schlagwort:	Adult Aged Databases, Factual Disability Evaluation Female Humans Middle Aged Retrospective Studies Surveys and Questionnaires Treatment Outcome Quality of Life Scoliosis diagnostic imaging Scoliosis surgery
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Corporate Authors: European Spine Study Group Publication Type: Journal Article; Multicenter Study Language: English [Eur Spine J] 2022 May; Vol. 31 (5), pp. 1166-1173. <i>Date of Electronic Publication: </i>2022 Jan 21. MeSH Terms: Quality of Life* ; Scoliosis* / diagnostic imaging ; Scoliosis* / surgery ; Adult ; Aged ; Databases, Factual ; Disability Evaluation ; Female ; Humans ; Middle Aged ; Retrospective Studies ; Surveys and Questionnaires ; Treatment Outcome References: Glassman SD, Bridwell K, Dimar JR, Horton W, Berven S, Schwab F (2005) The impact of positive sagittal balance in adult spinal deformity. Spine (Phila Pa 1976) 30(18):2024–2029. ; Lafage V, Schwab F, Patel A, Hawkinson N, Farcy JP (2009) Pelvic tilt and truncal inclination: two key radiographic parameters in the setting of adults with spinal deformity. 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(PMID: 31075761) ; Yilgor C, Sogunmez N, Boissiere L, Yavuz Y, Obeid I et al (2017) Global alignment and proportion (GAP) score: development and validation of a new method of analyzing spinopelvic alignment to predict mechanical complications after adult spinal deformity surgery. JBJS [Am] 99(19):1661–1672. ; Andrich D, Hagquist C (2012) Real and artificial differential item functioning. J Educ Behav Stat 37(3):387–416. ; Yüksel S, Demir P, Alkan A (2019) Factors causing occurrence of artificial dif: a simulation study for dichotomous data. Commun Stat-Simul Comput 48(7):2004–2011. Contributed Indexing: Keywords: Cobb; Deformity; Scoliosis; Spine; Surgery Entry Date(s): Date Created: 20220121 Date Completed: 20220520 Latest Revision: 20220913 Update Code: 20231215

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Impact of radiologic variables on item responses of ODI, SRS22 and SF-36. in adult spinal deformity patients: differential item functioning (DIF) analysis results from a multi-center database.