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Related Experiment Videos

The modified rivermead mobility index: validity and reliability.

S Lennon1, L Johnson

  • 1Rehabilitation Sciences Research Group, School of Health Sciences, University of Ulster at Jordanstown, Newtownabbey, Northern Ireland. s.lennon@ulst.ac.uk

Disability and Rehabilitation
|February 24, 2001
PubMed
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The Modified Rivermead Mobility Index (MRMI) is a reliable and responsive tool for assessing stroke patients. It provides consistent results between raters and accurately measures mobility changes early after stroke.

Area of Science:

  • Rehabilitation Medicine
  • Neuroscience
  • Clinical Psychology

Background:

  • The Rivermead Mobility Index (RMI) is a widely used scale for assessing mobility in stroke patients.
  • Further development of the RMI aimed to enhance its psychometric properties for early stroke rehabilitation.

Purpose of the Study:

  • To evaluate the psychometric properties of the Modified Rivermead Mobility Index (MRMI).
  • Key properties assessed include face/content validity, responsiveness, test-retest reliability, inter-rater reliability, and internal consistency.

Main Methods:

  • Face/content validity was established through a consensus exercise with 42 physiotherapists.
  • Test-retest and inter-rater reliability were assessed on 30 stroke patients by two independent raters.
  • Responsiveness was evaluated using effect size calculations on admission and discharge scores of 16 acute stroke patients.

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Main Results:

  • The MRMI demonstrated high responsiveness to change (effect size = 1.15).
  • It showed excellent test-retest reliability (p = 0.47) and inter-rater reliability (ICC = 0.98, p < 0.001).
  • High internal consistency was confirmed (Cronbach's alpha = 0.93).

Conclusions:

  • The Modified Rivermead Mobility Index (MRMI) is a valid and reliable measure for assessing mobility in early stroke stages.
  • The MRMI yields consistent results across different raters, irrespective of experience.
  • A change of over 4.5 points is needed to indicate a true change in mobility due to measurement error.