EXCEED THE SPACE PROVIDED. This is an application for the Data Management Center for the Carotid Occlusion Surgery Study (COSS). The COSS research team is made up of the Clinical Coordinating Center (CCC) at Washington University in St. Louis and the Data Management Center at The University of Iowa. Dr. William Powers is the Principal Investigator for COSS and the Director of the Clinical Coordinating Center. He has prepared a sister proposal. The two are intended to be reviewed together. The goal of this study is to test the hypothesis that extra cranial-intra cranial (EC/IC) arterial bypass by surgical anastomosis of the superficial temporal artery to the middle cerebral artery (STA-MCA) when added to best medical therapy can reduce by 40%, despite perioperative stroke and death, subsequent ipsilateral ischemic stroke at two years in patients with recently symptomatic internal carotid artery occlusion and Stage II hemodynamic failure. The Data Management Center will be responsible for designing and implementing the database and web-based distributed data entry system and the central randomization system for COSS. It will be responsible for ensuring the timely and complete capture of data into the database and for ensuring that the data are valid. It will also conduct twice-annual site monitoring visits at each participating clinical site. DMC investigators and staff will work with Drs Powers and Grubb and the study investigators to design the interim and final data analyses and will .perform all statistical analyses and prepare reports from those analyses. The center will also support the activities of the Surgical and Safety Committee and the Endpoint Adjudication Committee. Investigators and staff from the DMC will participate in the twice-monthly conference calls with the CCC and will attend the face-to-face meetings that will occur at alternate sites six times a year.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Project--Cooperative Agreements (U01)
Project #
5U01NS041895-05
Application #
6943930
Study Section
Special Emphasis Panel (ZNS1-SRB-K (01))
Program Officer
Janis, Scott
Project Start
2001-09-30
Project End
2007-11-30
Budget Start
2005-12-01
Budget End
2007-11-30
Support Year
5
Fiscal Year
2006
Total Cost
$954,211
Indirect Cost
Name
University of Iowa
Department
Biostatistics & Other Math Sci
Type
Schools of Public Health
DUNS #
062761671
City
Iowa City
State
IA
Country
United States
Zip Code
52242
Reynolds, Matthew R; Kamath, Ashwin A; Grubb, Robert L et al. (2014) The safety of aeroplane travel in patients with symptomatic carotid occlusion. J Neurol Neurosurg Psychiatry 85:435-7
Powers, William J; Clarke, William R; Grubb Jr, Robert L et al. (2014) Lower stroke risk with lower blood pressure in hemodynamic cerebral ischemia. Neurology 82:1027-32
Marshall, Randolph S; Festa, Joanne R; Cheung, Ying-Kuen et al. (2014) Randomized Evaluation of Carotid Occlusion and Neurocognition (RECON) trial: main results. Neurology 82:744-51
Grubb Jr, Robert L; Powers, William J; Clarke, William R et al. (2013) Surgical results of the Carotid Occlusion Surgery Study. J Neurosurg 118:25-33
Marshall, R S; Festa, J R; Cheung, Y K et al. (2012) Cerebral hemodynamics and cognitive impairment: baseline data from the RECON trial. Neurology 78:250-5
Powers, William J (2012) Letter by Powers Regarding Article, ""Failure of cerebral hemodynamic selection in general or of specific positron emission tomography methodology? Carotid occlusion surgery study (COSS)"". Stroke 43:e43
Mikami, Katsunaka; Jorge, Ricardo E; Adams Jr, Harold P et al. (2011) Effect of antidepressants on the course of disability following stroke. Am J Geriatr Psychiatry 19:1007-15
Powers, William J; Clarke, William R; Grubb Jr, Robert L et al. (2011) Extracranial-intracranial bypass surgery for stroke prevention in hemodynamic cerebral ischemia: the Carotid Occlusion Surgery Study randomized trial. JAMA 306:1983-92
Ying Zhang; Clarke, William R (2010) A flexible futility monitoring method with time-varying conditional power boundary. Clin Trials 7:209-18