Dataset Information

Body image in idiopathic scoliosis: a comparison study of psychometric properties between four patient-reported outcome instruments.

ABSTRACT:

Background

Four patient-reported outcome (PRO) instruments are commonly used to assess body image in idiopathic scoliosis (IS): the Quality of Life Profile for Spinal Deformities (QLPSD), SRS-22 Self-Image scale, Spinal Appearance Questionnaire (SAQ), and Trunk Appearance Perception Scale (TAPS). The aim of this study is to compare the psychometric properties of these instruments in patients with IS and report the translational/cultural adaptation of the SAQ to Spanish.

Methods

The four instruments in a Spanish version were administered to 80 patients with IS aged 10 to 40 years old. The sample was stratified according to scoliosis magnitude (less and more than 45º). Analysis was also conducted for age groups. The psychometric properties studied included convergent and divergent construct validity, as well as internal consistency. Convergent validity was evaluated by correlation analysis between the self-image instruments and Cobb angle. Divergent validity was assessed with correlation analysis between PRO scores and SRS-22 dimensions scores such as Function, Pain and Mental Health.

Results

In the overall sample, each of the PRO instruments demonstrated high internal consistency (QLPSD Body Image, ??=?0.80; SRS-22 Self Image, ??=?0.78; SAQ, ??=?0.89; TAPS, ??=?0.87), also both for younger and adult patients subgroups. Correlation with curve magnitude was significant for each of the four scales. However, the correlation was higher for the pictorial scales (SAQ Appearance r?=?0.61, TAPS r?=?-0.62) than for the textual scales (QLPSD-bi r?=?0.36, SRS-22 Self-Image scale r?=?-0.41). In the younger group, correlation between Cobb angle and textual scales (QLPSD-bi and SRS-22 Self-Image Scale) was not significant. Body Image scales showed significant correlations with SRS-22 Pain, Function and Mental Health dimensions.

Conclusions

All four instruments tested have good psychometric properties. Pictorial scales (SAQ Appearance and TAPS) correlated better with the radiological magnitude of the curve and this correlation is independent of age. Unexpectedly, all four scales demonstrated significant correlations with non-body image dimensions and the divergent hypothesis was not confirmed. Globally, pictorial scales showed slightly better construct validity to test body image perception than textual scales.

SUBMITTER: Matamalas A

PROVIDER: S-EPMC4049402 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature

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Publications

Body image in idiopathic scoliosis: a comparison study of psychometric properties between four patient-reported outcome instruments.

Matamalas Antonia A Bagó Joan J D'Agata Elisabetta E Pellisé Ferran F

Health and quality of life outcomes 20140603

<h4>Background</h4>Four patient-reported outcome (PRO) instruments are commonly used to assess body image in idiopathic scoliosis (IS): the Quality of Life Profile for Spinal Deformities (QLPSD), SRS-22 Self-Image scale, Spinal Appearance Questionnaire (SAQ), and Trunk Appearance Perception Scale (TAPS). The aim of this study is to compare the psychometric properties of these instruments in patients with IS and report the translational/cultural adaptation of the SAQ to Spanish.<h4>Methods</h4>Th ...[more]

PMID: 24894714

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Dataset Information

Body image in idiopathic scoliosis: a comparison study of psychometric properties between four patient-reported outcome instruments.

Background

Methods

Results

Conclusions

Publications

Body image in idiopathic scoliosis: a comparison study of psychometric properties between four patient-reported outcome instruments.

Similar Datasets

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