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Interrater reliability and construct validity of the posture and postural ability scale in adults with cerebral pulsy in supine, prone, siting and standing position
Lund University.
Rehabilitation Centre of Excellence, Kópavogur, Iceland.
Rehabilitation Centre of Excellence, Kópavogur, Iceland.
Lund university.
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2014 (English)In: Clinical Rehabilitation, ISSN 0269-2155, E-ISSN 1477-0873, Vol. 28, no 1, p. 82-90Article in journal (Other academic) Published
Abstract [en]

Objective To evaluate reliability, internal consistency and construct validity of the Posture and Postural Ability Scale for adults with cerebral palsy. Design Psychometric evaluation of a clinical assessment tool. Setting Rehabilitation Centres in Sweden and Iceland. Subjects Thirty adults with cerebral palsy aged 19-22 years, six people at each level I-V of the Gross Motor Function Classification System. Main measures The Posture and Postural Ability Scale contains a 7-point ordinal scale for postural ability in supine, prone, sitting, and standing and items for assessment of posture. Posture and postural ability was rated from photos and videos by three independent assessors. Interrater reliability was calculated using weighted Kappa. Internal consistency was analysed with Cronbach’s alpha if item deleted and corrected item-total correlation. Construct validity was evaluated based on known groups, using Jonckheere Terpstra for averaged values of the three raters relative to the Gross Motor Function Classification System. Results There was an excellent interrater reliability (kappa=0.85-0.99) and a high internal consistency (alpha=0.96-0.97, item-total correlation=0.60-0.91). Median values differed (p<0.02) between known groups represented by the levels of gross motor function, showing construct validity for all items. Conclusion The Posture and Postural Ability scale showed an excellent interrater reliability for experienced raters, a high internal consistency and construct validity. It can detect postural asymmetries in adults with cerebral palsy at all levels of gross motor function.

Place, publisher, year, edition, pages
2014. Vol. 28, no 1, p. 82-90
Keywords [en]
posture, postural control, assessment, cerebral pulsy, reliability, validity
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:mdh:diva-16308DOI: 10.1177/0269215512465423Scopus ID: 2-s2.0-84891885333OAI: oai:DiVA.org:mdh-16308DiVA, id: diva2:572659
Available from: 2012-11-29 Created: 2012-11-28 Last updated: 2017-12-07Bibliographically approved

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Johansson, Ann-Christin

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CiteExportLink to record
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