The AEs were summarized by presenting the number and percentage of patients having any of the 4 AEs or discontinued due to any of the 4 predefined AEs (tremor, muscle rigidity, bradykinesia, and fall)in each treatment group. The 95% CIs associated with the rates were also presented.

Safety Population consisted of all participants who received at least 1 dose of study drug and had 1 post-baseline safety measurement. Participants with observation at 76 weeks were included in this analysis.

The discontinuations due to these AEs were summarized by presenting the number and percentage of patients having any of the 4 AEs or discontinued due to any of the 4 predefined AEs (tremor, muscle rigidity, bradykinesia, and fall) in each treatment group. The 95% CIs associated with these rates were also presented.

Safety Population consisted of all participants who received at least 1 dose of study drug and had 1 post-baseline safety measurement. Participants with observation at 76 weeks were included in this analysis.

Unified Parkinson Disease Rating Scale (UPDRS) is a 6 part Parkinson's disease specific rating scale that estimates clinical function taking into consideration both disability (functional deficits) and impairment (objective clinical signs). Part III records the motor examination in Items 18-31 rated on a scale of 0 to 4 with (0 being absent/ normal and 4 being the worse) for a total possible score of 0 to 56.

Safety population consisted of all participants who received at least 1 dose of study drug and had 1 post-baseline safety measurement. "n" in each of the categories is the number of participants at each time point with non-missing baseline and post-baseline measurements.

Mattis DRS-2 is a measure of cognitive status. The total score is the sum of 5 subscale scores: Attention [0-37], Initiation/Perservation [0-37] (performing alternating movements), Construction [0-6] (copying designs), Conceptualization [0-39] (similarities) and Memory [0-25] (sentence recall, design recognition)for a total possible score of 0-144. Higher score is reflective of better cognitive function, lower scores associated with more pronounced cognitive deficit. The change from baseline was calculated such that a positive number indicates an improvement.

Intent-to-treat population which included all patients who received at least 1 dose of study drug and had at least 1 pre- and post-baseline assessment for 1 of the efficacy variables. Last observation carried forward. (LOCF)

The Ten Point Clock Test measures executive functioning and visuospatial skills. Participants are asked to put numbers on the face of a clock and then make the clock read 10 minutes after 11. Points are awarded on a scale of 0 to 10 for spacing of specific numbers and the positions of the hands. The change from baseline was calculated such that a positive number indicates improvement.

Intent-to-treat population which included all patients who received at least 1 dose of study drug and had at least 1 pre- and post-baseline assessment for 1 of the efficacy variables. Last observation carried forward. (LOCF)

The parameter for analysis was the change from baseline of total score of 10 items on the NPI scale (NPI-10). The total score is a sum of the 10 domains, where the score for a domain is defined as the product of frequency (range: 1-4) and severity (range: 1-3). Each domain has a maximum score of 12 and all domains were equally weighted for total score(thus the range for the total score is 0 to 120 with 0 being completely healthy to 120 which is the worse score patient can get). The change from baseline was calculated such that a negative number indicates an improvement (symptom reduction).

Intent-to-treat population which included all patients who received at least 1 dose of study drug and had at least 1 pre- and post-baseline assessment for 1 of the efficacy variables. Last observation carried forward. (LOCF)

The 23 item caregiver-based ADL scale of the dementia Alzheimer's disease Cooperative Study-Activities of Daily Living (ADCS-ADL) was used for analysis. This is a caregiver rated questionnaire of 23 items, with possible scores over a range of 0-78, where 78 denote full functioning with no impairment. The total score was derived by adding up the item scores of the 23 items.

The change from baseline was calculated such that a positive change indicates an improvement.

Intent-to-treat population which included all patients who received at least 1 dose of study drug and had at least 1 pre- and post-baseline assessment for 1 of the efficacy variables. Last observation carried forward. (LOCF).

Unified Parkinson Disease Rating Scale (UPDRS) is a 6 part Parkinson's disease specific rating scale that estimates clinical function taking into consideration both disability (functional deficits) and impairment (objective clinical signs). UPDRS Part V is assessed by the modified Hoehn and Yahr Staging Scale. The scale ranges from 0 (no signs of disease) to 5 (wheelchair bound or bedridden unless aided).

The Safety population consisted of all patients who have received at least one dose of study drug and have had at least 1 safety measurement after baseline. n=indicates patients with observation during different timepoints.