To investigate the efficacy and the safety of ropinirole PR/XR tablets to ropinirole immediate release (IR) tablets with advanced Parkinson's disease in conjunction with L-dopa in a double-blind, parallel group comparison study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
302
Double-blind non-inferiority verification phase (24 weeks) At the baseline visit (Week 0), subjects who completed screening period will be randomised (1:1) to double-blind treatment with either ropinirole PR-PR group or ropinirole IR-PR group. The subjects'dose will be titrated according to the recommended schedule to achieve an optimal therapeutic response (ropinirolePR/XR2-15 mg/day ,ropinirolIR0.75-15 mg/day). Double-blind PR/XR switching phase (8 weeks) Ropinirole IR-PR subjects will be switched overnight to a similar dose of ropinirole PR/XR, while the remaining ropinirole PR-PR group will continue on the same dosage. Double blind long-term treatment phase (22 weeks) The same dose level at the end of PR/XR switching phase will be continued till week 54 under blind. Down titration phase Subjects who complete Week 54 or withdrawn will be down titrated over a 1 to 4 weeks period.
Double-blind non-inferiority verification phase (24 weeks) At the baseline visit (Week 0), subjects who completed screening period will be randomised (1:1) to double-blind treatment with either ropinirole PR-PR group or ropinirole IR-PR group. The subjects'dose will be titrated according to the recommended schedule to achieve an optimal therapeutic response (ropinirolePR/XR2-15 mg/day ,ropinirolIR0.75-15 mg/day). Double-blind PR/XR switching phase (8 weeks) Ropinirole IR-PR subjects will be switched overnight to a similar dose of ropinirole PR/XR, while the remaining ropinirole PR-PR group will continue on the same dosage. Double blind long-term treatment phase (22 weeks) The same dose level at the end of PR/XR switching phase will be continued till week 54 under blind. Down titration phase Subjects who complete Week 54 or withdrawn will be down titrated over a 1 to 4 weeks period.
Mean Change From Week 0 (Baseline) in the Japanese Unified Parkinson's Disease Rating Scale (UPDRS) Part III Total Score at the Final Assessment Point (FAP) (up to Week 24) in the Non-Inferiority Verification Phase
The Japanese UPDRS assesses the status of Parkinson's Disease (PD) patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms. Mean change from Week 0 was calculated as the total score at FAP minus the total score at Week 0. Participants who withdrew before Week 2 and who had only one observation for the part III total score were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Percentage of Responders on the Japanese UPDRS Part III Total Score at FAP (up to Week 24) in the Non-Inferiority Verification Phase
Thirty percent responders were defined as participants with a 30 percent or greater reduction from Week 0 in the Japanese UPDRS Part III total score. Twenty percent responders were defined as participants with a 20 percent or greater reduction from Week 0 in the Japanese UPDRS Part III total score. On-treatment last observations within the phase were carried forward as FAP values of the phase. FAP values do not include values of Weeks 0, 1, and 2; participants who withdrew before Week 2 and who had only one measurement for the part III total score were not included in the analysis.
Time frame: FAP (up to Week 24)
Mean Change From Week 0 in the Japanese UPDRS Part I Total Score at FAP (up to Week 24) in the Non-Inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms. Mean change from Week 0 was calculated as the total score at FAP minus the total score at Week 0.
Time frame: Week 0 and FAP (up to Week 24)
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GSK Investigational Site
Aichi, Japan
GSK Investigational Site
Aichi, Japan
GSK Investigational Site
Aichi, Japan
GSK Investigational Site
Aichi, Japan
GSK Investigational Site
Akita, Japan
GSK Investigational Site
Chiba, Japan
GSK Investigational Site
Chiba, Japan
GSK Investigational Site
Chiba, Japan
GSK Investigational Site
Chiba, Japan
GSK Investigational Site
Chiba, Japan
...and 44 more locations
Mean Change From Week 0 in the Japanese UPDRS Part II (at "On") Total Score at FAP (up to Week 24) in the Non-Inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug. Mean change from Week 0 was calculated as the total score at FAP minus the score at Week 0.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in the Japanese UPDRS Part II (at "Off") Total Score at Week 24 in the Non-Inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Mean change from Week 0 was calculated as the total score at FAP minus the total score at Week 0. Particpants with only one observation for the part II (at "Off") total score were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in the Japanese UPDRS Part IV Total Score at FAP (up to Week 24) in the Non-Inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications. Mean change from Week 0 was calculated as the total score at FAP minus the total score at Week 0.
Time frame: Week 0 and FAP (up to Week 24)
Japanese UPDRS Part I Total Score at Week 0 and FAP (up to Week 24) in the Non-inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms.
Time frame: Week 0 and FAP (up to Week 24)
Japanese UPDRS Part II (at "On") Total Score at Week 0 and FAP (up to Week 24) in the Non-inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Week 0 and FAP (up to Week 24)
Japanese UPDRS Part II (at "Off") Total Score at Week 0 and FAP (up to Week 24) in the Non-inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug.
Time frame: Week 0 and FAP (up to Week 24)
Japanese UPDRS Part III Total Score at Week 0 and FAP (up to Week 24) in the Non-inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms.
Time frame: Week 0 and FAP (up to Week 24)
Japanese UPDRS Part IV Total Score at Week 0 and FAP (up to Week 24) in the Non-inferiority Verification Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications.
Time frame: Week 0 and FAP (up to Week 24)
Percentage of Responders on the Clinical Global Impression-Improvement (CGI-I) at FAP (up to Week 24) in the Non-Inferiority Verification Phase
The CGI-I assesses the participant's improvement or worsening of PD from Baseline with the following eight grades: 0 = Not Assessed, 1 = Very Much Improved, 2 = Much Improved, 3 = Minimally Improved, 4 = No Change, 5 = Minimally Worse, 6 = Much Worse, and 7 = Very Much Worse. Responders are defined as those participants with scores of very much improved or much improved.
Time frame: FAP (up to Week 24)
Percentage of Responders in Change From Week 0 in Awake Time Spent "Off" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Responders were defined as participants with a 20 percent or greater reduction on change from Week 0 in Off time (percentage).
Time frame: FAP (up to Week 24)
Percentage of Responders in Percent Change From Week 0 in Awake Time Spent "Off" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Responders were defined as participants with a 20 percent or greater reduction in percent change from Week 0 in Off time (percentage).
Time frame: FAP (up to Week 24)
Mean Change From Week 0 in Awake Time Spent "Off" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Mean change from Week 0 in Off time (actual hours) was calculated as Off time (hours) at FAP minus Off time (hours) at Week 0.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in Percentage of Awake Time Spent "Off" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. "Off" time is measured as a proportion using the following formula: (Sum of two days off time \[hours\]/Sum of two days awake time \[hours\]) x 100. Change from Week 0 in Off time is measured using the following formula: Off time (proportion) at FAP minus Off time (proportion) at Week 0.
Time frame: Week 0 and FAP (up to Week 24)
Mean Percent Change From Week 0 in Percentage of Awake Time Spent "Off" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. "Off" time is measured as a proportion using the following formula: (Sum of two days off time \[hours\]/Sum of two days awake time \[hours\]) x 100. Percent change from Week 0 in Off time (proportion) is measured using the following formula: (Change from Week 0 in Off time \[proportion\]/Off time \[proportion\] at Week 0) x 100.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in Awake Time Spent "On" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"On" state is defined as the state at which PD symptoms are well controlled by the drug. Mean Change from Week 0 in On time (actual hours) was calculated as On time (hours) at FAP minus On time (hours) at Week 0. Participants who had only one observation for On time were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in Percentage of Awake Time Spent "On" at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"On" state is defined as the state at which PD symptoms are well controlled by the drug. "On" time is measured as a proportion using the following formula: (Sum of two days On time \[hours\]/Sum of two days awake time \[hours\]) x 100. Change from Week 0 in On time is measured using the following formula: On time (proportion) at FAP minus On time (proportion) at Week 0. Participants who had only one observation for On time were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in Awake Time Spent "On" With Troublesome Dyskinesias at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"On" state is defined as the state at which PD symptoms are well controlled by the drug. Troublesome dyskinesia is defined as dyskinesia that interferes with the participant's daily activity. Mean change from Week 0 in On time with troublesome dyskinesias (actual hours) was calculated as On time with troublesome dyskinesias (hours) at FAP minus On time with troublesome dyskinesias (hours) at Week 0. Participants who had only one observation for On time with troublesome dyskinesias were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Mean Change From Week 0 in Percentage of Awake Time Spent "On" With Troublesome Dyskinesias at FAP (up to Week 24) in the Non-Inferiority Verification Phase
"On" time with troublesome dyskinesias is measured as a proportion using the following formula: (Sum of two days On time with troublesome dyskinesias \[hours\]/Sum of two days awake time \[hours\]) x 100. Change from Week 0 in On time with troublesome dyskinesias is measured using the following formula: On time with troublesome dyskinesias (proportion) at FAP minus On time with troublesome dyskinesias (proportion) at Week 0. Participants who had only one observation for On time with troublesome dyskinesias were not included in the analysis.
Time frame: Week 0 and FAP (up to Week 24)
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "On") at Week 0 and FAP (up to Week 24) in the Non-Inferiority Verification Phase
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Week 0 and FAP (up to Week 24)
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "Off") at Week 0 and FAP (up to Week 24) in the Non-Inferiority Verification Phase
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug.
Time frame: Week 0 and FAP (up to Week 24)
Percentage of Participants Remaining in the Study on the Indicated Days During the Non-Inferiority Verification Phase in the Ropinirole PR-Ropinirole PR Group
The percentage of participants remaining in the study was presented by Kaplan-Meier method, where premature discontinuation (i.e., withdrawal before Week 24) was the event, and participants who had completed the phase were censored.
Time frame: 0-175 days (up to Week 24)
Percentage of Participants Remaining in the Study on the Indicated Days During the Non-Inferiority Verification Phase in the Ropinirole IR-Ropinirole PR Group
The percentage of participants remaining in the study was presented by Kaplan-Meier method, where premature discontinuation (i.e., withdrawal before Week 24) was the event, and participants who had completed the phase were censored.
Time frame: 0-175 days (up to Week 24)
Mean Change From Week 24 (Period Baseline) in the Japanese UPDRS Part I Total Score at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms. Mean change from Week 24 was calculated as the total score at FAP minus the total score at Week 24. Participants whose observation could not be obtained after Week 24 because of their premature withdrawal or other reasons were not included.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in the Japanese UPDRS Part II (at "On") Total Score at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug. Mean change from Week 24 was calculated as the total score at FAP minus the total score at Week 24.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in the Japanese UPDRS Part II (at "Off") Total Score at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is where PD symptoms are not adequately controlled by the drug. Mean change from Week 0 was calculated as the total score at FAP minus the total score at Week 0. Participants whose observation could not be obtained after Week 24 because of their premature withdrawal or other reasons were not included in the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in the Japanese UPDRS Part III Total Score at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms. Mean change from Week 24 was calculated as the total score at FAP minus the total score at Week 24.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in the Japanese UPDRS Part IV Total Score at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications. Mean change from Week 24 was calculated as the total score at FAP minus the total score at Week 24.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Japanese UPDRS Part I Total Score at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Japanese UPDRS Part II (at "On") Total Score at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Japanese UPDRS Part II (at "Off") Total Score at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Only participants who had "off" state were included in the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Japanese UPDRS Part III Total Score at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms. One participant whose observation could not be obtained at Week 24 was not included in the analysis for Week 24.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Japanese UPDRS Part IV Total Score at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications. One participant whose observation could not be obtained at Week 24 was not included in the analysis for Week 24.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in Awake Time Spent "Off" at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Mean change from Week 24 in Off time (actual hours) was calculated as Off time (hours) at FAP minus Off time (hours) at Week 24. Participants whose observation could not be obtained after Week 24 because of their premature withdrawal or other reasons were not included in the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in Percentage of Awake Time Spent "Off" at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. "Off" time is measured as a proportion using the following formula: (Sum of two days off time \[hours\]/Sum of two days awake time \[hours\]) x 100. Change from Week 24 in Off time is measured using the following formula: Off time (proportion) at FAP minus Off time (proportion) at Week 24. Participants whose observation could not be obtained after Week 24 because of their premature withdrawal or other reasons were not included in the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Mean Change From Week 24 in Awake Time Spent "On" With Troublesome Dyskinesias at FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
"On" state is defined as the state at which PD symptoms are well controlled by the drug. Troublesome dyskinesia is defined as dyskinesia that interferes with the participant's daily activity. Mean change from Week 24 on On time with troublesome dyskinesias (actual hours) was calculated as On time with troublesome dyskinesias (hours) at FAP minus On time with troublesome dyskinesias (hours) at Week 24. Participants who had 0 hour as On time with troublesome dyskinesias at Week 24 were excluded from the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "On") at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "Off") at Week 24 and FAP (From Week 26 up to Week 32) in the PR/XR Switching Phase
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Only participants who had "off" state were included in the analysis.
Time frame: Week 24 and FAP (from Week 26 up to Week 32)
Percentage of Participants Remaining in the Study on the Indicated Days During the PR/XR Switching Phase in the Ropinirole PR-Ropinirole PR Group
The percentage of participants remaining in the study was presented by Kaplan-Meier method, where premature discontinuation (i.e., withdrawal before Week 32) was the event, and participants who had completed the phase were censored.
Time frame: 0-89 days within the PR/XR Switching Phase (between Weeks 24 and 32)
Percentage of Participants Remaining in the Study on the Indicated Days During the PR/XR Switching Phase in the Ropinirole IR-Ropinirole PR Group
The percentage of participants remaining in the study was presented by Kaplan-Meier method, where premature discontinuation (i.e., withdrawal before Week 32) was the event, and participants who had completed the phase were censored.
Time frame: 0-89 days within the PR/XR Switching Phase (between Weeks 24 and 32)
Percentage of Responders on the Japanese UPDRS Part III Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
Thirty percent responders were defined as participants with a 30 percent or greater reduction from Week 0 (Baseline) in the Japanese UPDRS Part III total score. Twenty percent responders were defined as participants with a 20 percent or greater reduction from Week 0 in the Japanese UPDRS Part III total score.
Time frame: Week 54
Mean Change From Week 0 in the Japanese UPDRS Part I Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms. Mean change from Week 0 was calculated as the total score at Week 54 minus the total score at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in the Japanese UPDRS Part II (at "On") Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug. Mean change from Week 0 was calculated as the total score at Week 54 minus the total score at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in the Japanese UPDRS Part II (at "Off") Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Mean change from Week 0 was calculated as the total score at Week 54 minus the total score at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in the Japanese UPDRS Part III Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms. Mean change from Week 0 was calculated as the total score at Week 54 minus the total score at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in the Japanese UPDRS Part IV Total Score at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications. Mean change from Week 0 was calculated as the total score at Week 54 minus the total score at Week 0.
Time frame: Weeks 0 and 54
Japanese UPDRS Part I Total Score at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part I assesses mentation, behavior, and mood on 4 items. Participants receive a score of 0-4 points per item. The maximum total score is 16 points. A higher score indicates more severe mental symptoms.
Time frame: Weeks 0 and 54
Japanese UPDRS Part II (at "On") Total Score at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Weeks 0 and 54
Japanese UPDRS Part II (at "Off") Total Score at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part II assesses activities of daily living on 13 items. Participants receive a score of 0-4 points per item. The maximum total score is 52 points. A higher score indicates more severe PD symptoms. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug.
Time frame: Weeks 0 and 54
Japanese UPDRS Part III Total Score at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part III assesses motor examination on 27 items. Participants receive a score of 0-4 points per item. The maximum total score is 108 points. A higher score indicates more severe PD symptoms.
Time frame: Weeks 0 and 54
Japanese UPDRS Part IV Total Score at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Japanese UPDRS assesses the status of PD patients objectively. Part IV assesses complications of therapy on 11 items. Participants receive a score of 0-4 or 0-1 points per item depending on the item. The maximum total score is 23 points. A higher score indicates more severe symptoms of complications.
Time frame: Weeks 0 and 54
Percentage of Responders on the CGI-I at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The CGI-I assesses the participant's improvement or worsening of PD from baseline with the following eight grades: 0 = Not Assessed, 1 = Very Much Improved, 2 = Much Improved, 3 = Minimally Improved, 4 = No Change, 5 = Minimally Worse, 6 = Much Worse, and 7 = Very Much Worse. Responders are defined as those participants with scores of very much improved or much improved.
Time frame: Week 54
Percentage of Responders in Change From Week 0 in Awake Time Spent "Off" at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Responders were defined as participants with a 20 percent or greater reduction in change from Week 0 in Off time (percentage).
Time frame: Week 54
Percentage of Responders in Percent Change From Week 0 in Awake Time Spent "Off" at Week 54 in the Long-term Phase
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Responders were defined as participants with a 20 percent or greater reduction on percent change from Week 0 in Off time (percentage).
Time frame: Week 54
Mean Change From Week 0 in Awake Time Spent "Off" at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. Mean change from Week 0 in Off time (actual hours) was calculated as Off time (hours) at Week 54 minus Off time (hours) at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in Percentage of Awake Time Spent "Off" at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
"Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug. "Off" time is measured as a proportion using the following formula: (Sum of two days off time \[hours\]/Sum of two days awake time \[hours\]) x 100. Change from Week 0 in Off time is measured using the following formula: Off time (proportion) at Week 54 minus Off time (proportion) at Week 0.
Time frame: Weeks 0 and 54
Mean Change From Week 0 in Awake Time Spent "On" With Troublesome Dyskinesias at Week 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
"On" state is defined as the state at which PD symptoms are well controlled by the drug. Troublesome dyskinesia is defined as dyskinesia that interferes with the participant's daily activity. Mean change from Week 0 in On time with troublesome dyskinesias (actual hours) was calculated as On time with troublesome dyskinesias (hours) at Week 54 minus On time with troublesome dyskinesias (hours) at Week 0.
Time frame: Weeks 0 and 54
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "On") at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "On" state is defined as the state at which PD symptoms are well controlled by the drug.
Time frame: Weeks 0 and 54
Number of Participants at Each Stage of the Modified Hoehn & Yahr Severity of Illness (at "Off") at Weeks 0 and 54 in the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The Modified Hoehn \& Yahr criteria are measured on the following 8-point scale for disease severity: 0, No signs of disease; 1, Unilateral disease; 1.5, Unilateral plus axial involvement; 2, Bilateral disease; 2.5, Mild bilateral disease; 3, Mild to moderate bilateral disease; 4, Severe disability; and 5, Wheelchair bound or bedridden unless aided. "Off" state is defined as the state at which PD symptoms are not adequately controlled by the drug.
Time frame: Weeks 0 and 54
Percentage of Participants Remaining in the Study on the Indicated Days During the Long-term Phase in the Ropinirole PR-Ropinirole PR Group
The percentage of participants remaining in the study was presented by Kaplan-Meier method, where premature discontinuation (i.e., withdrawal before Week 54) was the event, and participants who had completed the study were censored.
Time frame: 0-385 days (up to Week 54)