To review the recent literature since the 2009 Cochrane review regarding the effectiveness of voice therapy for patients with functional dysphonia.
A range of articles report on the effects of voice therapy treatment for functional dysphonia, with a wide range of interventions described. Only one study is a randomized controlled trial. A number of excellent review articles have extended the knowledge base. In primary research, methodological issues persist: studies are small, and not adequately controlled. Studies show improved standards of outcome measurement and of description of the content of voice therapy.
There is a continued need for larger, methodologically sound clinical effectiveness studies. Future studies need to be replicable and generalizable in order to inform and elucidate clinical practice.
aDepartment of Speech and Language Therapy, Plymouth Hospital NHS Trust, UK
bDepartment of Linguistics and Communication Sciences, Faculty of Education, Health, and Welfare, University College Plymouth, Plymouth, UK
cSpeech, Voice and Swallowing Department, Otolaryngology, Freeman Hospital, Newcastle University Medical School, Newcastle Upon Tyne, UK
Correspondence to Marianne Bos-Clark, MSc, MRCSLT, Department of Linguistics and Communication Sciences (Speech and Language Therapy), Faculty of Education, Health, and Welfare, University College Plymouth, Derriford Road, Plymouth, PL6 8BH, UK Tel: +44 1752 636700 x4295; e-mail: email@example.com