Document Detail

WOMAC-pf as a measure of physical function in patients with Parkinson's disease and late-onset sequels of poliomyelitis: unidimensionality and item behaviour.
MedLine Citation:
PMID:  22376135     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To assess psychometric properties of the Western Ontario and MacMasters Universities Osteoarthritis Index (WOMAC)-pf, an osteoarthritis (OA)-specific questionnaire used to establish the level of physical functioning in patients with late-onset sequels of poliomyelitis (LOSP) and Parkinson's disease (PD).
STUDY DESIGN AND SETTING: Unidimensionality (using principal component analyses [PCA] and Rasch analyses) was separately established for three diagnostic groups: OA (n = 288), LOSP (n = 168) and PD (n = 200). Additionally, differential item functioning (DIF) among the three diagnostic groups was assessed using ordinal regression (Polytomous Universal Model) analyses. Baseline data were used from an ongoing cohort study of these three patient populations.
RESULTS: Unidimensionality was adequate, with all items loading on the first principal component. The Rasch analyses revealed that item fit was generally good. Uniform and non-uniform DIF were found to be present among the three diagnostic groups in three and one of the 17 physical functioning subscale (WOMAC-pf) items, respectively.
CONCLUSION: The WOMAC-pf is a unidimensional measure of physical functioning in patients with LOSP and PD, in addition to its established use in OA. [
IMPLICATIONS FOR REHABILITATION: • Disability in physical functioning related to mobility(walking, stair climbing, etc.) is a common feature of many chronic diseases, including osteoarthritis, late-onset sequels of poliomyelitis and Parkinson's disease.• In this study, the Western Ontario and MacMasters Universities Osteoarthritis Index-pf was shown to bea useful and adequate tool to assess physical functioning in these patient groups.• The study highlighted that, despite differences in diagnosis,history and course of the disease, patients with different conditions experience similar disabilities in their physical functioning.]
Martijn P M Steultjens; Janneke Stolwijk-Swüste; Leo D Roorda; Annet J Dallmeijer; Gabriella M van Dijk; Bart Post; Joost Dekker;
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Publication Detail:
Type:  Journal Article     Date:  2012-02-29
Journal Detail:
Title:  Disability and rehabilitation     Volume:  34     ISSN:  1464-5165     ISO Abbreviation:  Disabil Rehabil     Publication Date:  2012  
Date Detail:
Created Date:  2012-06-29     Completed Date:  2012-09-14     Revised Date:  2013-11-06    
Medline Journal Info:
Nlm Unique ID:  9207179     Medline TA:  Disabil Rehabil     Country:  England    
Other Details:
Languages:  eng     Pagination:  1423-30     Citation Subset:  IM    
Institute for Applied Health Research and School of Health, Glasgow Caledonian University , Glasgow, Scotland , United Kingdom.
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MeSH Terms
Activities of Daily Living*
Disability Evaluation
Middle Aged
Pain Measurement
Parkinson Disease / physiopathology*
Poliomyelitis / physiopathology*
Principal Component Analysis
Psychometrics / statistics & numerical data*
Quality of Life / psychology
Questionnaires / standards
Reproducibility of Results
Severity of Illness Index

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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