title: Effectiveness of voice therapy in functional dysphonia: where are we now?
abstract: OBJECTIVE
  To review the recent literature since the 2009 Cochrane review regarding the effectiveness of voice therapy for patients with functional dysphonia.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Speech and Language Therapy, Plymouth Hospital NHS Trust, and Department of Linguistics and Communication Sciences, Faculty of Education, Health, and Welfare, University College Plymouth, Plymouth, UK. mbosclark@marjon.ac.uk
authors.forename: Marianne
authors.initials: M
authors.lastname: Bos-Clark
authors.forename: Paul
authors.initials: P
authors.lastname: Carding
mesh_terms: D055154:Dysphonia / Q000534:rehabilitation*; D006801:Humans; D016896:Treatment Outcome; D014834:Voice Training