title: Idiopathic Parkinson's disease: vocal and quality of life analysis.
abstract: OBJECTIVE
  To compare voice and life quality of male patients with idiopathic Parkinson's disease, with individuals without disease (Control Group).
  
  
  METHODS
  A cross-sectional study that evaluated the voice of individuals with Parkinson's disease, the group was composed of 27 subjects, aged from 39 to 79 years-old (average 59.96). The Control Group was matched on sex and age. Participants underwent voice recording. Perceptual evaluation was made using GRBASI scale, which considers G as the overall degree of dysphonia, R as roughness, B as breathiness, A as asthenia, S as strain and I as instability. The acoustic parameters analyzed were: fundamental frequency, jitter, shimmer, and harmonic to noise ratio (NHR). For vocal self-perception analysis, we used the Voice Related Quality of Life protocol.
  
  
  RESULTS
  Fundamental frequency and jitter presented higher values in the Parkinson's group. NHR values were higher in the Control Group. Perceptual analysis showed a deviation ranging. The vocal disorder self-perception demonstrated a worse impact on quality of life.
  
  
  CONCLUSIONS
  Individuals with Parkinson's disease have an altered voice quality and a negative impact on quality of life.
authors.affiliation: UFMG, Belo Horizonte MG, Brazil.
authors.forename: Luiza Furtado e
authors.initials: LF
authors.lastname: Silva
authors.forename: Ana Cristina Côrtes
authors.initials: AC
authors.lastname: Gama
authors.forename: Francisco Eduardo Costa
authors.initials: FE
authors.lastname: Cardoso
authors.forename: César Augusto da Conceição
authors.initials: CA
authors.lastname: Reis
authors.forename: Iara Barreto
authors.initials: IB
authors.lastname: Bassi
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000523:psychology*; D011788:Quality of Life / Q000523:psychology*; D013064:Speech Disorders / Q000175:diagnosis / Q000523:psychology*; D013067:Speech Perception / Q000502:physiology*; D011795:Surveys and Questionnaires; D014832:Voice Disorders / Q000175:diagnosis / Q000523:psychology; D014833:Voice Quality / Q000502:physiology*