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Uncovering indicators of the international classification of functioning, disability, and health from the 39-item Parkinson's disease questionnaire.

Nilsson, Maria H LU ; Westergren, Albert; Carlsson, Gunilla LU and Hagell, Peter LU (2010) In Parkinson's Disease 2010.
Abstract
The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reported rating scale in Parkinson's disease (PD). However, recent studies have questioned its validity and it is unclear what scores represent. This study explored the possibility of regrouping PDQ-39 items into scales representing the International Classification of Functioning, Disability, and Health (ICF) components of Body Functions and Structures (BF), Activities and Participation (AP), and Environmental (E) factors. An iterative process using Rasch analysis produced five new items sets, two each for the BF and AP components and one representing E. Four of these were found to represent clinically meaningful variables: Emotional Impairment (BF),... (More)
The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reported rating scale in Parkinson's disease (PD). However, recent studies have questioned its validity and it is unclear what scores represent. This study explored the possibility of regrouping PDQ-39 items into scales representing the International Classification of Functioning, Disability, and Health (ICF) components of Body Functions and Structures (BF), Activities and Participation (AP), and Environmental (E) factors. An iterative process using Rasch analysis produced five new items sets, two each for the BF and AP components and one representing E. Four of these were found to represent clinically meaningful variables: Emotional Impairment (BF), Gross Motor Disability (AP), Fine Motor Disability (AP), and Socioattitudinal Environment (E) with acceptable reliability (0.73-0.96) and fit to the Rasch model (total item-trait chi-square, 8.28-33.2; P > .05). These new ICF-based scales offer a means to reanalyze PDQ-39 data from an ICF perspective and to study its health components using a widely available health status questionnaire for people with PD. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Parkinson's Disease
volume
2010
publisher
Hindawi Publishing Corporation
external identifiers
  • PMID:20976013
  • WOS:000208765500026
  • Scopus:77955938355
ISSN
2042-0080
DOI
10.4061/2010/984673
language
English
LU publication?
yes
id
0f90ae38-89f5-4e22-8b3b-cf88438f7a32 (old id 1710789)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20976013?dopt=Abstract
date added to LUP
2010-11-05 14:43:57
date last changed
2016-10-13 04:23:35
@misc{0f90ae38-89f5-4e22-8b3b-cf88438f7a32,
  abstract     = {The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reported rating scale in Parkinson's disease (PD). However, recent studies have questioned its validity and it is unclear what scores represent. This study explored the possibility of regrouping PDQ-39 items into scales representing the International Classification of Functioning, Disability, and Health (ICF) components of Body Functions and Structures (BF), Activities and Participation (AP), and Environmental (E) factors. An iterative process using Rasch analysis produced five new items sets, two each for the BF and AP components and one representing E. Four of these were found to represent clinically meaningful variables: Emotional Impairment (BF), Gross Motor Disability (AP), Fine Motor Disability (AP), and Socioattitudinal Environment (E) with acceptable reliability (0.73-0.96) and fit to the Rasch model (total item-trait chi-square, 8.28-33.2; P > .05). These new ICF-based scales offer a means to reanalyze PDQ-39 data from an ICF perspective and to study its health components using a widely available health status questionnaire for people with PD.},
  author       = {Nilsson, Maria H and Westergren, Albert and Carlsson, Gunilla and Hagell, Peter},
  issn         = {2042-0080},
  language     = {eng},
  publisher    = {ARRAY(0xb82e710)},
  series       = {Parkinson's Disease},
  title        = {Uncovering indicators of the international classification of functioning, disability, and health from the 39-item Parkinson's disease questionnaire.},
  url          = {http://dx.doi.org/10.4061/2010/984673},
  volume       = {2010},
  year         = {2010},
}