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BMC Musculoskeletal Disorders
Published in: BMC Musculoskeletal Disorders 1/2015

Open Access 01-12-2015 | Research article

Reliability, validity, sensitivity and internal consistency of the ICF based Basic Mobility Scale for measuring the mobility of patients with musculoskeletal problems in the acute hospital setting: a prospective study

Authors: Karin Pieber, Malvina Herceg, Tatjana Paternostro-Sluga, Eleonore Pablik, Michael Quittan, Peter Nicolakis, Veronika Fialka-Moser, Richard Crevenna

Published in: BMC Musculoskeletal Disorders | Issue 1/2015

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Abstract

Background

The assessment of mobility is important in the acute care setting. Existing tests suffer from limitations. The aim of the study was to examine the inter-rater reliability, the validity, the sensitivity to change, and the internal consistency of an ICF based scale.

Methods

In a prospective study inpatients in the acute care setting with restricted mobility aged above 50 years assigned to rehabilitative treatment were included. Assessment of subscales of the Functional Independence Measure (FIM) and the ICF based Basic Mobility Scale (BMS) were performed at admission and before discharge. Furthermore pain, length of stay in hospital, and post-discharge residential status were recorded. Inter-rater reliability, criterion-concurrent validity, sensitivity to change, and internal consistency were calculated. Furthermore, floor and ceiling effects were determined.

Results

One hundred twenty-five patients (79 women/46 men) were included. The BMS showed an excellent inter-rater reliability for the total BMS (ICC BMS: 0.85 (95 % CI: 0.81–0.88). The criterion-concurrent validity was high to excellent (Spearman correlation coefficient: −0.91 in correlation to FIM) and the internal consistency was good (Cronbach’s alpha 0.88). The BMS proved to be sensitive to improvements in mobility (Wilcoxon’s signed rank test: p < 0.0001; The effect size for the BMS was 1.075 and the standardized response mean 1.10. At admission, the BMS was less vulnerable to floor effects.

Conclusions

The BMS may be used as a reliable and valid tool for the assessment of mobility in the acute care setting. It is easy to apply, sensitive to change during the hospital stay and not vulnerable to floor and ceiling effects.
Appendix
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Metadata
Title
Reliability, validity, sensitivity and internal consistency of the ICF based Basic Mobility Scale for measuring the mobility of patients with musculoskeletal problems in the acute hospital setting: a prospective study
Authors
Karin Pieber
Malvina Herceg
Tatjana Paternostro-Sluga
Eleonore Pablik
Michael Quittan
Peter Nicolakis
Veronika Fialka-Moser
Richard Crevenna
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2015
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/s12891-015-0638-7

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