Construct validity of Comprehensive High-Level Activity Mobility Predictor (CHAMP) for male servicemembers with traumatic lower-limb loss

This study examined the convergent construct validity of a new performance-based assessment instrument called the Comprehensive High-Level Activity Mobility Predictor (CHAMP) as a measure of high-level mobility in servicemembers (SMs) with traumatic lower-limb loss (LLL). The study was completed by...

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Bibliographic Details
Published in:Journal of rehabilitation research and development 2013-01, Vol.50 (7), p.919-930
Main Authors: Gailey, Robert S, Scoville, Charles, Gaunaurd, Ignacio A, Raya, Michele A, Linberg, Alison A, Stoneman, Paul D, Campbell, Stuart M, Roach, Kathryn E
Format: Article
Language:English
Subjects:
Adult
Amputation, Traumatic - physiopathology
Amputation, Traumatic - rehabilitation
Amputees
Analysis
Artificial Limbs
Cross-Sectional Studies
Disability Evaluation
Evaluation
Exercise Test
Femur - injuries
Human locomotion
Humans
Leg
Male
Medical tests
Military Personnel - classification
Movement - physiology
Physiological aspects
Predictive Value of Tests
Recovery of Function
Tibia - injuries
Treatment Outcome
United States
Walking - physiology
Young Adult
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Summary:This study examined the convergent construct validity of a new performance-based assessment instrument called the Comprehensive High-Level Activity Mobility Predictor (CHAMP) as a measure of high-level mobility in servicemembers (SMs) with traumatic lower-limb loss (LLL). The study was completed by 118 SMs. Convergent construct validity of the CHAMP was established using the 6-minute walk test (6MWT) as a measure of overall mobility and physical function and the Amputee Mobility Predictor (AMP) as a measure of basic prosthetic mobility. The known group methods construct validity examined disparities in high-level mobility capability among SMs with different levels of LLL. The CHAMP score demonstrated a strong positive relationship between 6MWT distance (r = 0.80, p < 0.001) and AMP score (r = 0.87, p < 0.001), respectively. In addition, the CHAMP can discriminate between different levels of LLL. Study findings support the CHAMP as a valid performance-based assessment instrument of high-level mobility for SMs with traumatic LLL.
ISSN:0748-7711
1938-1352
DOI:10.1682/JRRD.2012.05.0100