Dataset from A Double-blind, Double-dummy, Placebo-controlled, Randomized, Three Parallel Groups Study Comparing the Efficacy, Safety and Tolerability of Pramipexole Extended Release (ER) Versus Placebo and Versus Pramipexole Immediate Release (IR) Administered Orally Over a 26-week Maintenance Phase in L-Dopa+ Treated Patients With Advanced Parkinsons Disease (PD).

The general aim of this trial is to determine the efficacy (as measured by the change from baseline to the end of the maintenance phase in the total score for Unified Parkinsons Disease Rating Scale Parts II and III combined), safety, and tolerability of pramipexole ER, in daily doses from 0.375 milligram to 4.5 milligram once a day, in comparison to placebo, in Levodopa combined with a Dopa-Decarboxylase-inhibitor treated Parkinson patients with advanced Parkinsons Disease and motor fluctuations. In addition, a numerical comparison of the efficacy of pramipexole extended release versus pramipexole immediate release will be done. The efficacy of pramipexole immediate release will also be compared to placebo, for assay sensitivity.