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Observational Study
. 2021 Mar;13(3):307-313.
doi: 10.1002/pmrj.12423. Epub 2020 Jul 27.

Construct Validity of the Gait Assessment and Intervention Tool (GAIT) in People With Multiple Sclerosis

María Dolores Gor-García-Fogeda  1 , Roberto Cano-de-la-Cuerda  2 , Janis J Daly  3 , Francisco Molina-Rueda  3   4
Affiliations
Observational Study

Construct Validity of the Gait Assessment and Intervention Tool (GAIT) in People With Multiple Sclerosis

María Dolores Gor-García-Fogeda et al. PM R. 2021 Mar.

Abstract

Introduction: In clinical practice, observational scales are the most common approach used to assess gait pattern in people with neurological disorders. The Gait Assessment and Intervention Tool (GAIT) is an observational gait scale, and it has proved to be the most comprehensive, homogeneous, and objective of all the observational gait scales studied in people with neurological conditions.

Objective: To study the construct validity of the GAIT in people with multiple sclerosis (MS).

Design: An observational study was conducted.

Setting: Multiple Sclerosis Foundation in Madrid (Spain).

Patients: Thirty-five patients with MS were assessed.

Main outcome measure(s): GAIT construct validity was assessed using the following scales: Rivermead Visual Gait Assessment (RVGA), Tinetti Gait Scale (TGS), 10-Meter Walking Test (10MWT), Timed Up&Go (TUG), Hauser Ambulatory Index (HAI), Multiple Sclerosis Walking Scale-12 (MSWS-12), Functional Gait Assessment (FGA), Modified Ashworth Scale (MAS), and Rivermead Mobility Index (RMI).

Results: A total of 35 subjects with MS were assessed. The correlations between the GAIT and the RVGA were excellent (r > .90) and moderate with TGS (values between -.62 and -.59). Correlations with HAI, FGA, MSWS-12, and RMI were moderate (with values between .57 and .67). Correlations were lower for the velocity scales TUG and MAS.

Conclusions: The construct validity of the GAIT is high, as a measure of gait coordination in people with MS. Specifically, there was excellent correlation with the RVGA. There was a moderate correlation for the GAIT with measures of functional mobility, but a lesser correlation of the GAIT with measures restricted to temporal gait characteristics (speed measures) or measurements of impairments underlying gait patterns such as balance or muscle tone.

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References

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