Evidence map›Paper›PMID 35476321›Full record

ArticleSpine deformity2022

Shorter and sweeter: the 16-item version of the SRS questionnaire shows better structural validity than the 20-item version in young patients with spinal deformity.

A F Mannion, A Elfering, T F Fekete, I J Harding, M Monticone, P Obid, T Niemeyer, U Liljenqvist, A Boss, L Zimmermann and 10 more

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In one paragraph

Article in Spine deformity, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

20 authors.

A F MannionDepartment Teaching, Research and Development, Spine Subdivision, Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland. anne.mannion@yahoo.com.ORCID 0000-0002-1203-1096
A ElferingInstitute of Psychology, University of Bern, Bern, Switzerland.
T F FeketeSpine Centre, Schulthess Klinik, Zürich, Switzerland.ORCID 0000-0001-5231-5600
I J HardingNorth Bristol NHS Trust, Bristol, UK.
M MonticoneDepartment Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.
P ObidDept. of Orthopaedics and Orthopaedic Surgery, Greifswald, University Hospital, Ferdinand-Sauerbruch-Strasse, Greifswald, 17475, Germany.
T NiemeyerSpine and Scoliosis Center, Asklepios Paulinen Klinik Wiesbaden, Wiesbaden, Germany.
U LiljenqvistDepartment Spine Surgery, St Franziskus Hospital, Münster, Germany.
A BossInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
L ZimmermannDepartment Teaching, Research and Development, Spine Subdivision, Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland.
A Vila-CasademuntSpine Research Unit, Vall d'Hebron Institute of Research, Barcelona, Spain.
F J Sánchez Pérez-GruesoSpine Unit, Department of Orthopedic Surgery, University Hospital La Paz, Madrid, Spain.
J PizonesSpine Unit, Department of Orthopedic Surgery, University Hospital La Paz, Madrid, Spain.
F PelliséSpine Unit, Hospital Vall d'Hebron, Barcelona, Spain.
S Richner-WunderlinDepartment Teaching, Research and Development, Spine Subdivision, Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland.
F S KleinstückSpine Centre, Schulthess Klinik, Zürich, Switzerland.
I ObeidSpine Surgery Unit, Pellegrin University Hospital, Bordeaux, France.
L BoissiereSpine Surgery Unit, Pellegrin University Hospital, Bordeaux, France.
A AlanayDept. Orthopedics and Traumatology, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey.
J BagóSpine Research Unit, Vall d'Hebron Institute of Research, Barcelona, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn patients with adult spinal deformity, it was previously shown that 16 of the non-management items of the SRS-instrument showed a better fit to the theoretical four-factor model (pain, function, self-image, mental health) than did all 20 items. Whether the same phenomenon is observed in data from younger (< 20y) patients, for whom the questionnaire was originally designed, is not currently known.

methodsConfirmatory factor analysis was used to evaluate the factor structure of the 20 non-management items of the SRS-instrument completed by 3618 young patients with spinal deformity (75.5% female; mean age, 15.0 ± 2.0 years) and of its equivalence across language versions (2713 English-speaking, 270 Spanish, 264 German, 223 Italian, and 148 French). The root mean square error of approximation (RMSEA) and comparative fit index (CFI) indicated model fit.

resultsCompared with the 20-item version, the 16-item solution significantly increased the fit (p < 0.001) across all language versions, to achieve good model fit (CFI = 0.96, RMSEA = 0.06). For both 16-item and 20-item models, equivalence across languages was not reached, with some items showing weaker item-loading for some languages, in particular German and French.

conclusionIn patients with adolescent idiopathic scoliosis, the shorter 16-item version showed a better fit to the intended 4-factor structure of the SRS-instrument. The wording of some of the items, and/or their equivalence across language versions, may need to be addressed. Questionnaire completion can be a burden for patients; if a shorter, more structurally valid version is available, its use should be encouraged.

Indexed as

Quality of LifeScoliosisAdolescentAdultFactor Analysis, StatisticalFemaleHumansLanguageMaleSurveys and QuestionnairesAISFactor analysisLanguage versionsPatient-reported outcomeSRS-22

Identifiers

PMID35476321

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.