title: Impact of fatigue on quality of life in patients with Parkinson's disease.
abstract: OBJECTIVE
  Fatigue is frequent and important in the lives of Parkinson's disease (PD) patients. It is multidimensional, with physical and mental aspects. The aim of our study was to explore the impact of fatigue on quality of life (QoL) for PD patients.
  
  
  METHODS
  The sample consisted of 175 PD patients from Eastern Slovakia (52% males, mean age 68.2 +/- 9.2, mean disease duration 7.4 +/- 6.7). The Multidimensional Fatigue Inventory (five dimensions), the Parkinson's Disease Quality of Life Questionnaire (eight dimensions) and the Unified Parkinson's Disease Rating Scale were used. Demographic data were obtained in a structured interview. Fisher's exact test, t-test, and multiple linear regression analysis were used.
  
  
  RESULTS
  Different aspects of fatigue selectively explained different domains of QoL - physical dimensions of fatigue were connected with Mobility and Activities of daily living; mental fatigue dimensions affected Cognition, Emotional well-being, Communication and Activities of daily living; general fatigue was related to Bodily discomfort. The explained variances varied from 5% (Social support) to 65% (Activities of daily living).
  
  
  CONCLUSIONS
  Fatigue combined with worse functional status appears to be a significant contributor to poor quality of life. Its multidimensional construct can be used to develop strategies for improving specific aspects of fatigue to improve QoL for PD patients.
authors.affiliation: Department of Neurology, Faculty of Medicine, Safarik University Kosice, Kosice, Slovakia. eva.havlikova@upjs.sk
authors.forename: E
authors.initials: E
authors.lastname: Havlikova
authors.forename: J
authors.initials: J
authors.lastname: Rosenberger
authors.forename: I
authors.initials: I
authors.lastname: Nagyova
authors.forename: B
authors.initials: B
authors.lastname: Middel
authors.forename: T
authors.initials: T
authors.lastname: Dubayova
authors.forename: Z
authors.initials: Z
authors.lastname: Gdovinova
authors.forename: J P
authors.initials: JP
authors.lastname: van Dijk
authors.forename: J W
authors.initials: JW
authors.lastname: Groothoff
mesh_terms: D000368:Aged; D005221:Fatigue / Q000209:etiology* / Q000523:psychology*; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications* / Q000523:psychology*; D011788:Quality of Life; D012189:Retrospective Studies; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires