title: Influence of aging and sex on voice parameters in patients with unilateral vocal cord paralysis.
abstract: OBJECTIVE
  The objective of this study was to investigate influences of aging and sex on different voice parameters in patients with unilateral vocal cord paralysis (VCP).
  
  
  METHODS
  Retrospective review of patients with unilateral VCP.
  
  
  METHODS
  Forty-seven patients, 22 males, 25 females (24-85 years), were enrolled in the study. The diagnosis of VCP was established by videolaryngostroboscopy. The acoustic parameters of jitter, shimmer, degree of subharmonic, noise to harmonic ratio, fundamental frequency, and maximal intensity were measured. The auditive voice analysis included roughness, breathiness, and hoarseness. Statistical analysis involves Pearson's bivariate correlation coefficients and two-way analysis of variance with interaction variables.
  
  
  METHODS
  After unilateral VCP in the elderly, some sex- and age-related differences in the restriction of the voice can be documented.
  
  
  CONCLUSIONS
  In general, the investigated voice parameters showed similar tendencies to those in otherwise healthy aging persons.
authors.affiliation: SSK Izmir Hospital, Department of Otolaryngology, Voice Center Izmir, Turkey. tkandogan@yahoo.com
authors.forename: Tolga
authors.initials: T
authors.lastname: Kandogan
authors.forename: Eberhart
authors.initials: E
authors.lastname: Seifert
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D005260:Female; D006801:Humans; D007828:Laryngoscopy; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012727:Sex Characteristics; D049489:Stroboscopy; D014741:Video Recording; D014826:Vocal Cord Paralysis / Q000503:physiopathology*; D014831:Voice / Q000502:physiology*; D014833:Voice Quality