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Development and testing of the Parkinson's disease quality of life scale
Author(s) -
Welsh Mickie,
McDermott Michael P.,
Holloway Robert G.,
Plumb Sandy,
Pfeiffer Ronald,
Hubble Jean
Publication year - 2003
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.10424
Subject(s) - quality of life (healthcare) , scale (ratio) , psychometrics , reliability (semiconductor) , psychology , content validity , disease , clinical psychology , parkinson's disease , medicine , gerontology , physical therapy , nursing , pathology , power (physics) , physics , quantum mechanics
Abstract We report on the development and results of preliminary psychometric testing of a disease specific health‐related quality of life (HRQoL) scale intended for use in individuals diagnosed with idiopathic Parkinson's disease (PD). Results from an initial qualitative study provided content for item development and scale construction of the Parkinson's disease quality of life scale (PDQUALIF). The 33‐item instrument includes seven domains: social/role function, self‐image/sexuality, sleep, outlook, physical function, independence, and urinary function, plus one item of Global HRQoL. Initial psychometric testing of the instrument was conducted in 233 outpatient clinic attendees with physician‐confirmed idiopathic PD. Factor structure, reliability and validity of the scale have been established in this cross‐sectional study. Continuing development of the PDQUALIF will be directed at enhancing the psychometric properties, establishing responsiveness and determining appropriateness in culturally diverse samples. © 2003 Movement Disorder Society