title: Comparison of self and proxy ratings for voice handicap index and motor-related quality-of-life of individuals with Parkinson's disease.
abstract: Quality-of-life (QoL) consists of health, psychological well-being and communication-related domains. Due to the heterogeneous nature of Parkinson disease (PD), it is important to examine effects of different domains including motor and cognitive performance or motor and speech performance among the same set of individuals. Existing studies indicate mixed findings due to use of different QoL measures and lack of general consensus regarding QoL components.
  
  
  
  The present study examined self and proxy ratings for 20 individuals with PD on Voice Handicap Index (VHI) and PDQ-39 mobility to determine effects on speech and motor-related QoL, respectively.
  
  
  
  There was good level of agreement between self and proxy ratings for PDQ-39 mobility ratings alone. In addition, no overall group differences were found for self and proxy ratings of VHI and PDQ-39 mobility ratings, thus indicating similar perceptions by individuals with PD and their communication partners for speech and motor-related changes associated with PD. Further, no significant correlations between speech and motor-related QoL were found, thereby suggesting these domains to be independent of each other.
  
  
  
  The present study indicates the need to consider both self and proxy reports to understand the impact of PD on a person's overall functioning.
authors.affiliation: a Department of Communication Sciences and Disorders , Oklahoma State University , Stillwater , OK , USA.
authors.forename: Sabiha
authors.initials: S
authors.lastname: Parveen
authors.affiliation: b Department of Communication Sciences and Disorders , Bowling Green State University , Bowling Green , OH , USA.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Goberman
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019957:Motor Skills Disorders / Q000209:etiology* / Q000523:psychology; D010300:Parkinson Disease / Q000150:complications* / Q000523:psychology; D011788:Quality of Life; D012649:Self Concept; D013064:Speech Disorders / Q000209:etiology* / Q000523:psychology
keywords: PDQ-39 mobility; Parkinson disease; Voice Handicap Index (VHI); proxy ratings; quality-of-life; self-ratings