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EBP Compendium: Summary of Systematic Review

Academy of Neurologic Communication Disorders and Sciences; American Speech-Language-Hearing Association; Department of Veterans Affairs
Evidence for Effectiveness of Treatment of Loudness, Rate, or Prosody in Dysarthria: A Systematic Review

Yorkston, K. M., Hakel, M., et al. (2007).
Journal of Medical Speech-Language Pathology, 15(2), xi-xxxvi.

Indicators of Review Quality:

The review addresses a clearly focused question No
Criteria for inclusion of studies are provided Yes
Search strategy is described in sufficient detail for replication Yes
Included studies are assessed for study quality Yes
Quality assessments are reproducible Yes

Description: This is a review of studies examining the effectiveness of interventions for dysarthria addressing global aspects of speech in individuals with neurologic impairments including traumatic brain injury, stroke, Parkinson's disease and multiple sclerosis. The review is part of an Academy of Neurologic Communication Disorders and Sciences Practice Guideline for the management of dysarthria.

Question(s) Addressed:

Question not specifically stated.

Population: Participants with a diagnosis of dysarthria

Intervention/Assessment: Treatment of speech production.

Number of Studies Included: 51

Years Included: Not stated



  • Treatment
    • Speech
      • "Efforts to document the efficacy of treatment focusing on the global aspects of speech, including loudness, rate, and prosody are in the preliminary phase of investigation” (p. xxxiii). 
      • The strongest evidence in “treatment effectiveness is in the area of modification of loudness in individuals with [Parkinson's disease] PD who have hypokinetic dysarthria” (p. xxxiii).

Keywords: Dysarthria, Brain Injury, Parkinson's Disease, Multiple Sclerosis

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Added to Compendium: December 2011

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