Rasch measurement analysis of the Mayo-Portland Adaptability Inventory (MPAI-4) in a community-based rehabilitation sample

Jacob Kean, James F. Malec, Irwin M. Altman, Shannon Swick

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The precise measurement of patient outcomes depends upon clearly articulated constructs and refined clinical assessment instruments that work equally well for all subgroups within a population. This is a challenging task in those with acquired brain injury (ABI) because of the marked heterogeneity of the disorder and subsequent outcomes. Alhough essential, the iterative process of instrument refinement is often neglected. This present study was undertaken to examine validity, reliability, dimensionality and item estimate invariance of the Mayo-Portland Adaptability Inventory - 4 (MPAI-4), an outcome measure for persons with ABI. The sampled population included 603 persons with traumatic ABI participating in a home- and community-based rehabilitation program. Results indicated that the MPAI-4 is a valid, reliable measure of outcome following traumatic ABI, which measures a broad but unitary core construct of outcome after ABI. Further, the MPAI-4 is composed of items that are unbiased toward selected subgroups except where differences could be expected [e.g., more chronic traumatic brain injury (TBI) patients are better able to negotiate demands of transportation than more acute TBI patients]. We address the trade-offs between strict unidimensionality and clinical applicability in measuring outcome, and illustrate the advantages and disadvantages of applying single-parameter measurement models to broad constructs.

Original languageEnglish
Pages (from-to)745-753
Number of pages9
JournalJournal of Neurotrauma
Volume28
Issue number5
DOIs
StatePublished - May 1 2011

Fingerprint

Brain Injuries
Rehabilitation
Equipment and Supplies
Chronic Brain Injury
Outcome Assessment (Health Care)
Reproducibility of Results
Population
Traumatic Brain Injury

Keywords

  • outcome measures
  • rehabilitation
  • TBI

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Rasch measurement analysis of the Mayo-Portland Adaptability Inventory (MPAI-4) in a community-based rehabilitation sample. / Kean, Jacob; Malec, James F.; Altman, Irwin M.; Swick, Shannon.

In: Journal of Neurotrauma, Vol. 28, No. 5, 01.05.2011, p. 745-753.

Research output: Contribution to journalArticle

Kean, Jacob ; Malec, James F. ; Altman, Irwin M. ; Swick, Shannon. / Rasch measurement analysis of the Mayo-Portland Adaptability Inventory (MPAI-4) in a community-based rehabilitation sample. In: Journal of Neurotrauma. 2011 ; Vol. 28, No. 5. pp. 745-753.
@article{b6a54f4f459c4f4bb27ce6ad1f319b86,
title = "Rasch measurement analysis of the Mayo-Portland Adaptability Inventory (MPAI-4) in a community-based rehabilitation sample",
abstract = "The precise measurement of patient outcomes depends upon clearly articulated constructs and refined clinical assessment instruments that work equally well for all subgroups within a population. This is a challenging task in those with acquired brain injury (ABI) because of the marked heterogeneity of the disorder and subsequent outcomes. Alhough essential, the iterative process of instrument refinement is often neglected. This present study was undertaken to examine validity, reliability, dimensionality and item estimate invariance of the Mayo-Portland Adaptability Inventory - 4 (MPAI-4), an outcome measure for persons with ABI. The sampled population included 603 persons with traumatic ABI participating in a home- and community-based rehabilitation program. Results indicated that the MPAI-4 is a valid, reliable measure of outcome following traumatic ABI, which measures a broad but unitary core construct of outcome after ABI. Further, the MPAI-4 is composed of items that are unbiased toward selected subgroups except where differences could be expected [e.g., more chronic traumatic brain injury (TBI) patients are better able to negotiate demands of transportation than more acute TBI patients]. We address the trade-offs between strict unidimensionality and clinical applicability in measuring outcome, and illustrate the advantages and disadvantages of applying single-parameter measurement models to broad constructs.",
keywords = "outcome measures, rehabilitation, TBI",
author = "Jacob Kean and Malec, {James F.} and Altman, {Irwin M.} and Shannon Swick",
year = "2011",
month = "5",
day = "1",
doi = "10.1089/neu.2010.1573",
language = "English",
volume = "28",
pages = "745--753",
journal = "Journal of Neurotrauma",
issn = "0897-7151",
publisher = "Mary Ann Liebert Inc.",
number = "5",

}

TY - JOUR

T1 - Rasch measurement analysis of the Mayo-Portland Adaptability Inventory (MPAI-4) in a community-based rehabilitation sample

AU - Kean, Jacob

AU - Malec, James F.

AU - Altman, Irwin M.

AU - Swick, Shannon

PY - 2011/5/1

Y1 - 2011/5/1

N2 - The precise measurement of patient outcomes depends upon clearly articulated constructs and refined clinical assessment instruments that work equally well for all subgroups within a population. This is a challenging task in those with acquired brain injury (ABI) because of the marked heterogeneity of the disorder and subsequent outcomes. Alhough essential, the iterative process of instrument refinement is often neglected. This present study was undertaken to examine validity, reliability, dimensionality and item estimate invariance of the Mayo-Portland Adaptability Inventory - 4 (MPAI-4), an outcome measure for persons with ABI. The sampled population included 603 persons with traumatic ABI participating in a home- and community-based rehabilitation program. Results indicated that the MPAI-4 is a valid, reliable measure of outcome following traumatic ABI, which measures a broad but unitary core construct of outcome after ABI. Further, the MPAI-4 is composed of items that are unbiased toward selected subgroups except where differences could be expected [e.g., more chronic traumatic brain injury (TBI) patients are better able to negotiate demands of transportation than more acute TBI patients]. We address the trade-offs between strict unidimensionality and clinical applicability in measuring outcome, and illustrate the advantages and disadvantages of applying single-parameter measurement models to broad constructs.

AB - The precise measurement of patient outcomes depends upon clearly articulated constructs and refined clinical assessment instruments that work equally well for all subgroups within a population. This is a challenging task in those with acquired brain injury (ABI) because of the marked heterogeneity of the disorder and subsequent outcomes. Alhough essential, the iterative process of instrument refinement is often neglected. This present study was undertaken to examine validity, reliability, dimensionality and item estimate invariance of the Mayo-Portland Adaptability Inventory - 4 (MPAI-4), an outcome measure for persons with ABI. The sampled population included 603 persons with traumatic ABI participating in a home- and community-based rehabilitation program. Results indicated that the MPAI-4 is a valid, reliable measure of outcome following traumatic ABI, which measures a broad but unitary core construct of outcome after ABI. Further, the MPAI-4 is composed of items that are unbiased toward selected subgroups except where differences could be expected [e.g., more chronic traumatic brain injury (TBI) patients are better able to negotiate demands of transportation than more acute TBI patients]. We address the trade-offs between strict unidimensionality and clinical applicability in measuring outcome, and illustrate the advantages and disadvantages of applying single-parameter measurement models to broad constructs.

KW - outcome measures

KW - rehabilitation

KW - TBI

UR - http://www.scopus.com/inward/record.url?scp=79955977021&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955977021&partnerID=8YFLogxK

U2 - 10.1089/neu.2010.1573

DO - 10.1089/neu.2010.1573

M3 - Article

C2 - 21332409

AN - SCOPUS:79955977021

VL - 28

SP - 745

EP - 753

JO - Journal of Neurotrauma

JF - Journal of Neurotrauma

SN - 0897-7151

IS - 5

ER -