Article

OBJECTIVE: To investigate the psychometric properties of the Mayo-Portland
Adaptability Inventory-4 (MPAI-4) obtained by self-report in a large sample of
active duty military personnel with traumatic brain injury (TBI). DESIGN:
Consecutive cohort who completed the MPAI-4 as a part of a larger battery of
clinical outcome measures at the time of intake to an outpatient brain injury
clinic. SETTING: Medical center. PARTICIPANTS: Consecutively referred sample of
active duty military personnel (N=404) who suffered predominantly mild (n=355),
but also moderate (n=37) and severe (n=12), TBI. INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURE: MPAI-4 RESULTS: Initial factor analysis suggested 2 salient
dimensions. In subsequent analysis, the ratio of the first and second eigenvalues
(6.84:1) and parallel analysis indicated sufficient unidimensionality in 26
retained items. Iterative Rasch analysis resulted in the rescaling of the measure
and the removal of 5 additional items for poor fit. The items of the final
21-item Mayo-Portland Adaptability Inventory-military were locally independent,
demonstrated monotonically increasing responses, adequately fit the item response
model, and permitted the identification of nearly 5 statistically distinct levels
of disability in the study population. Slight mistargeting of the population
resulted in the global outcome, as measured by the Mayo-Portland Adaptability
Inventory-military, tending to be less reflective of very mild levels of
disability. CONCLUSIONS: These data collected in a relatively large sample of
active duty service members with TBI provide insight into the ability of patients
to self-report functional impairment and the distinct effects of military
deployment on outcome, providing important guidance for the meaningful
measurement of outcome in this population.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS