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Direct linkSimberg, Susanna; Santtila, Pekka; Soveri, Anna; Varjonen, Markus; Sala, Eeva; Sandnabba, N. Kenneth – Journal of Speech, Language, and Hearing Research, 2009
Purpose: To explore the existence of genetic effects as well as the interaction between potential genetic effects and a voice-demanding occupation on dysphonia. Method: One thousand seven hundred and twenty-eight Finnish twins (555 male; 1,173 female) born between 1961 and 1989 completed a questionnaire concerning vocal symptoms and occupation.…
Descriptors: Twins, Voice Disorders, Genetics, Factor Analysis
Peer reviewedRoy, Nelson; Merrill, Ray M.; Thibeault, Susan; Gray, Steven D.; Smith, Elaine M. – Journal of Speech, Language, and Hearing Research, 2004
To examine the frequency and adverse effects of voice disorders on job performance and attendance in teachers and the general population, 2,401 participants from Iowa and Utah ([n.sub.1] = 1,243 teachers and [n.sub.2] = 1,279 nonteachers) were randomly selected and were interviewed by telephone using a voice disorder questionnaire. Teachers were…
Descriptors: Occupations, Singing, Job Performance, Voice Disorders
