Multi-dimensional analysis on Parkinson's disease questionnaire-39 in Parkinson's patients treated with Bushen Huoxue Granule: A multicenter, randomized, double-blinded and placebo controlled trial.

Objectives: To preliminarily assess the effects of Bushen Huoxue Granule (BHG) on Parkinson's Patients with Parkinson's Disease Questionnaire-39 (PDQ-39)and to provide data for further research.

Design: A randomized, double-blinded, placebo controlled study with a 3-month intervention period and a 6-month follow-up.

Interventions: Participants were patients with Parkinson's Disease (PD) of age ranging from 50 to 80 years and Hoehn and Yahr (H-Y) stage I-IV of the disease.