A Retrospective Study to Evaluate the Effectiveness of onabotulinumtoxinA in Preventing Headaches in Patients With Chronic Migraines
This study has suspended participant recruitment.
(Company decision due to enrollment challenges.)
Information provided by (Responsible Party):
First received: December 12, 2012
Last updated: June 12, 2013
Last verified: June 2013
This study will evaluate the effectiveness of OnabotulinumtoxinA to prevent headaches in patients with Chronic Migraine.
|Study Design:||Observational Model: Case-Only
Time Perspective: Retrospective
Resource links provided by NLM:
U.S. FDA Resources
Further study details as provided by Allergan:
Primary Outcome Measures:
- Number of Headache Days [ Time Frame: Up to 56 Weeks ] [ Designated as safety issue: No ]
|Study Start Date:||November 2012|
|Estimated Study Completion Date:||December 2013|
|Estimated Primary Completion Date:||December 2013 (Final data collection date for primary outcome measure)|
Previous treatment with onabotulinumtoxinA for Chronic Migraine based on retrospective review of medical records.
Previous treatment with onabotulinumtoxinA for Chronic Migraine.
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