Spinal cord independence measure, version III : applicability to the UK spinal cord injured population
Articolo
Data di Pubblicazione:
2009
Citazione:
Spinal cord independence measure, version III : applicability to the UK spinal cord injured population / C.A. Glass, L. Tesio, M. Itzkovich, B.M. Soni, P. Silva, M. Mecci, R. Chadwick, W. el Masry, A. Osman, G. Savic, B. Gardner, E. Bergstrom, A. Catz. - In: JOURNAL OF REHABILITATION MEDICINE. - ISSN 1650-1977. - 41:9(2009 Sep), pp. 723-728.
Abstract:
Objective: To examine the validity, reliability and usefulness of the Spinal Cord Independence Measure for the UK spinal cord injury population.
Design: Multi-centre cohort study.
Setting: Four UK regional spinal cord injury centres.
Subjects: Eighty-six people with spinal cord injury.
Interventions: Spinal Cord Independence Measure and Functional Independence Measure on admission analysed using inferential statistics, and Rasch analysis of Spinal Cord Independence Measure.
Main outcome measures: Internal consistency, inter-rater reliability, discriminant validity; Spinal Cord Independence Measure subscale match between distribution of item difficulty and patient ability measurements; reliability of patient ability measures; fit of data to Rasch model; unidimensionality of subscales; hierarchical ordering of categories within items; differential item functioning across patient groups.
Results: Scale reliability (kappa coefficients range 0.491–0.835; (p < 0.001)), internal consistency (Cronbach’s alpha 0.770 and 0.780 for raters), and validity (Pearson correlation; p < 0.01) were all significant. Spinal Cord Independence Measure subscales compatible with stringent Rasch requirements; mean infit indices high; distinct strata of abilities identified; most thresholds ordered; item hierarchy stable across clinical groups and centres. Misfit and differences in item hierarchy identified. Difficulties assessing central cord injuries highlighted.
Conclusion: Conventional statistical and Rasch analyses justify the use of the Spinal Cord Independence Measure in clinical practice and research in the UK. Cross-cultural validity may be further improved.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Rehabilitation; Spinal cord injuries; Statistics
Elenco autori:
C.A. Glass, L. Tesio, M. Itzkovich, B.M. Soni, P. Silva, M. Mecci, R. Chadwick, W. el Masry, A. Osman, G. Savic, B. Gardner, E. Bergstrom, A. Catz
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