A multicentre, randomised controlled trial to compare the clinical and cost-effectiveness of Lee Silverman Voice Treatment versus standard NHS Speech and Language Therapy versus control in Parkinson's disease: a study protocol for a randomised controlled trial.

Trials · 2020 · PMC7251680 · PMID 32460885

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showed a trendno p-value reported

The pilot trial showed a trend towards improvement in the LSVT LOUD® and SLT groups over the control group at 3 months, but the findings were not powered to give a definitive answer.

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