Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis
Objective Adult spinal deformity (ASD) have lower health-related quality of life (HRQoL) compared to the general population. Applying Rasch measurement theory (RMT), this study tested the revised Scoliosis Research Society-22 (SRS-22r) HRQoL instrument among symptomatic adult patients with degenerat...
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| Format: | Article |
| Language: | English |
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Korean Spinal Neurosurgery Society
2022-06-01
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| Series: | Neurospine |
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| Online Access: | http://e-neurospine.org/upload/pdf/ns-2143354-677.pdf |
| _version_ | 1797333997490012160 |
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| author | Kati Kyrölä Susanna Hiltunen Mikko M. Uimonen Jari Ylinen Arja Häkkinen Jussi P. Repo |
| author_facet | Kati Kyrölä Susanna Hiltunen Mikko M. Uimonen Jari Ylinen Arja Häkkinen Jussi P. Repo |
| author_sort | Kati Kyrölä |
| collection | DOAJ |
| description | Objective Adult spinal deformity (ASD) have lower health-related quality of life (HRQoL) compared to the general population. Applying Rasch measurement theory (RMT), this study tested the revised Scoliosis Research Society-22 (SRS-22r) HRQoL instrument among symptomatic adult patients with degenerative spinal disorders and varying degrees of ASD. Methods SRS-22r data from 637 outpatient spine clinic patients with degenerative spine conditions were investigated for unidimensionality, item/scale fit, differential item functioning (DIF), scale coverage/targeting, and person separation index (PSI) using RMT. Results Unidimensionality of the SRS-22r was not supported for either the total score or for 3 of its 5 domains. Item fit was acceptable for 11/22 items. The individual domains showed good coverage despite the degree of structural disorders. Ordered thresholds were achieved by merging response categories in some of the items. DIF towards age or sex was found in 11/22 items and in some domain items. The PSI exceeded 0.7 for the SRS-22r total score. Conclusion The individual domain scores of the SRS-22r perform better than the total score providing good coverage and targeting among patients with ASD. Refinements of items and domains may improve the structural validity of the instrument to meet the criteria for measuring ASD patients, even when multidimensionality persists. |
| first_indexed | 2024-03-08T08:13:20Z |
| format | Article |
| id | doaj.art-44d199c767ff468bb4ba8628231381e9 |
| institution | Directory Open Access Journal |
| issn | 2586-6583 2586-6591 |
| language | English |
| last_indexed | 2024-03-08T08:13:20Z |
| publishDate | 2022-06-01 |
| publisher | Korean Spinal Neurosurgery Society |
| record_format | Article |
| series | Neurospine |
| spelling | doaj.art-44d199c767ff468bb4ba8628231381e92024-02-02T08:01:01ZengKorean Spinal Neurosurgery SocietyNeurospine2586-65832586-65912022-06-0119242243310.14245/ns.2143354.6771269Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory AnalysisKati Kyrölä0Susanna Hiltunen1Mikko M. Uimonen2Jari Ylinen3Arja Häkkinen4Jussi P. Repo5 Department of Surgery, Central Finland Healthcare District, Jyväskylä, Finland Department of Surgery, Central Finland Healthcare District, Jyväskylä, Finland Department of Surgery, Central Finland Healthcare District, Jyväskylä, Finland Department of Physical Medicine and Rehabilitation, Central Finland Healthcare District, Jyväskylä, Finland Department of Physical Medicine and Rehabilitation, Central Finland Healthcare District, Jyväskylä, Finland Department of Surgery, Central Finland Healthcare District, Jyväskylä, FinlandObjective Adult spinal deformity (ASD) have lower health-related quality of life (HRQoL) compared to the general population. Applying Rasch measurement theory (RMT), this study tested the revised Scoliosis Research Society-22 (SRS-22r) HRQoL instrument among symptomatic adult patients with degenerative spinal disorders and varying degrees of ASD. Methods SRS-22r data from 637 outpatient spine clinic patients with degenerative spine conditions were investigated for unidimensionality, item/scale fit, differential item functioning (DIF), scale coverage/targeting, and person separation index (PSI) using RMT. Results Unidimensionality of the SRS-22r was not supported for either the total score or for 3 of its 5 domains. Item fit was acceptable for 11/22 items. The individual domains showed good coverage despite the degree of structural disorders. Ordered thresholds were achieved by merging response categories in some of the items. DIF towards age or sex was found in 11/22 items and in some domain items. The PSI exceeded 0.7 for the SRS-22r total score. Conclusion The individual domain scores of the SRS-22r perform better than the total score providing good coverage and targeting among patients with ASD. Refinements of items and domains may improve the structural validity of the instrument to meet the criteria for measuring ASD patients, even when multidimensionality persists.http://e-neurospine.org/upload/pdf/ns-2143354-677.pdfspinal diseasesrasch measurement theorylatent trait theoryrevised scoliosis research society-22outcomes researchhealth-related quality of life |
| spellingShingle | Kati Kyrölä Susanna Hiltunen Mikko M. Uimonen Jari Ylinen Arja Häkkinen Jussi P. Repo Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis Neurospine spinal diseases rasch measurement theory latent trait theory revised scoliosis research society-22 outcomes research health-related quality of life |
| title | Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis |
| title_full | Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis |
| title_fullStr | Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis |
| title_full_unstemmed | Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis |
| title_short | Psychometric Properties of the Scoliosis Research Society Questionnaire (Version 22r) Domains Among Adults With Spinal Deformity: A Rasch Measurement Theory Analysis |
| title_sort | psychometric properties of the scoliosis research society questionnaire version 22r domains among adults with spinal deformity a rasch measurement theory analysis |
| topic | spinal diseases rasch measurement theory latent trait theory revised scoliosis research society-22 outcomes research health-related quality of life |
| url | http://e-neurospine.org/upload/pdf/ns-2143354-677.pdf |
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