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Only a minority of intracranial aneurysms rupture to cause subarachnoid hemorrhage. To test the hypothesis that unruptured aneurysms have different characteristics and risk factor profiles compared to ruptured aneurysms. Patients were recruited with unruptured aneurysms or aneurysmal subarachnoid hemorrhages at 22 UK hospitals between 2011 and 2014. Demographic, clinical, and imaging data were collected using standardized case report forms. Risk factors were compared using multivariable logistic regression.
Neurosurgery, Volume 83, Issue 1, July 2018, Pages 43–52