Speech and language therapy interventions for speech problems in Parkinson's disease

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To evaluate the effectiveness of speech and language therapy (SLT) interventions on speech and voice problems in people with Parkinson’s disease. We will investigate whether: SLT is more effective than no SLT; SLT is more effective than placebo or attention control interventions; one SLT intervention is more effective than another SLT intervention (including standard care).