General motor function assessment scale--reliability of a Norwegian version

Disability and Rehabilitation
Birgitta Langhammer, Birgitta Lindmark

Abstract

The General Motor Function assessment scale (GMF) measures activity-related dependence, pain and insecurity among older people in frail health. The aim of the present study was to translate the GMF into a Norwegian version (N-GMF) and establish its reliability and clinical feasibility. The procedure used in translating the GMF was a forward and backward process, testing a convenience sample of 30 frail elderly people with it. The intra-rater reliability tests were performed by three physiotherapists, and the inter-reliability test was done by the same three plus nine independent colleagues. The statistical analyses were performed with a pairwise analysis for intra- and inter-rater reliability, using Cronbach's α, Percentage Agreement (PA), Svensson's rank transformable method and Cohen's κ. The Cronbach's α coefficients for the different subscales of N-GMF were 0.68 for Dependency, 0.73 for Pain and 0.75 for Insecurity. Intra-rater reliability: The variation in the PA for the total score was 40-70% in Dependence, 30-40% in Pain and 30-60% in Insecurity. The Relative Rank Variant (RV) indicated a modest individual bias and an augmented rank-order agreement coefficient ra of 0.96, 0.96 and 0.99, respectively. The variation in the...Continue Reading

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Citations

May 9, 2015·Geriatrics & Gerontology International·Birgitta Langhammer, Birgitta Lindmark

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