The concurrent validity and responsiveness of the high-level mobility assessment tool for measuring the mobility limitations of people with traumatic brain injury

Arch Phys Med Rehabil. 2006 Mar;87(3):437-42. doi: 10.1016/j.apmr.2005.10.028.


Objective: To investigate the concurrent validity and responsiveness of the High-Level Mobility Assessment Tool (HiMAT) in people after traumatic brain injury (TBI).

Design: This study compared the concurrent validity and responsiveness of the motor subsection of the FIM instrument and the gross function component of the Rivermead Motor Assessment (RMA) with the HiMAT, a new measure of high-level mobility developed for use in TBI.

Setting: A major rehabilitation hospital.

Participants: A convenience sample of 103 participants with TBI were recruited from a major rehabilitation hospital.

Interventions: Not applicable.

Main outcome measures: HiMAT, motor FIM, and the gross function RMA.

Results: The correlation between the HiMAT and motor FIM was moderate (r=.53, P<.001), largely because of a ceiling effect in the motor FIM. The correlation between the HiMAT and gross function RMA was strong (r=.87, P<.001), yet the gross function RMA was also susceptible to a ceiling effect, with 51.5% of subjects achieving the maximum score. The HiMAT was more responsive than the motor FIM and the gross function RMA on all indices.

Conclusions: The HiMAT is a new unidimensional scale with moderate concurrent validity for measuring high-level mobility. The HiMAT is more responsive and has less of a ceiling effect than either the motor FIM or the gross function RMA.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adolescent
  • Adult
  • Brain Injuries / physiopathology*
  • Humans
  • Neuropsychological Tests*
  • Outcome Assessment, Health Care
  • Psychomotor Performance / physiology*
  • Recovery of Function / physiology
  • Reproducibility of Results
  • Walking / physiology*