title: [Prevalence of voice disorders among educational professionals. Factors contributing to their appearance or their persistence].
abstract: A study was made of the prevalence of voice disorders and their risk factors in teaching professionals of Logroño, Spain. A prevalence and case-control study was made, including interviews, ENT examination, videostrobolaryngoscopy, perceptual evaluation of hoarseness, basic aerodynamic tests, the physical range of phonation, and a physical analysis of the acoustic signal. The prevalence of voice disorders among Logroño teachers was 17.7% (confidence interval: 12.1-25%). Nodular lesions (8.1%) were the most frequent pathology, followed by hyperfunctional dysphonia (4.1%), chronic laryngitis (2.7%), polyps (1.4%), hypofunctional dysphonia (0.7%), and submucous suffusion (0.7%). Voice disorders were more prevalent in women (19.3%) than in men (15.6%), and among teachers of the lowest grades: 36.4% in nursery schools, 25% in elementary school, and 20.8% in junior school. The width and depth of classrooms, larger number of students, longer classroom hours, and noise level were related with the frequency of voice disorders.
authors.affiliation: Hospital San Millán, Logroño, Clínica Universitaria, Navarra, Pamplona.
authors.forename: J A
authors.initials: JA
authors.lastname: Preciado
authors.forename: R
authors.initials: R
authors.lastname: García Tapia
authors.forename: J C
authors.initials: JC
authors.lastname: Infante
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors; D013030:Spain / Q000453:epidemiology; D013663:Teaching; D014832:Voice Disorders / Q000453:epidemiology*
vernacular_title: Estudio de la prevalencia de los trastornos de la voz en los profesionales de la enseñanza. Factores que intervienen en su aparición o en su mantenimiento.