Risk factors for poor outcome after aneurysmal subarachnoid hemorrhage in patients with initial favorable neurological status.

"Declarations Ethics approval/institutional review boardThe study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the institutional ethics committee (Faculty of Medicine of the University Duisburg-Essen, Registration number: 15-6331-BO) and registered in the German clinical trial register (DRKS, Unique identifier: DRKS00008749). Consent to participate/informed consent statementInformed consent was obtained from all subjects involved in the study. Conflict of interestThe authors declare no competing interests. Conflict of interest The authors declare no competing interests."

"Funding Open Access funding enabled and organized by Projekt DEAL."

"The study is based on the institutional retrospective database including all consecutive cases with acute aSAH presenting with a WFNS grades I–III at admission, who were treated in our clinic between 01/2003 and 06/2016. Individuals without aneurysm treatment were excluded from the final cohort. The study was approved by the institutional ethics committee (Faculty of Medicine of the University Duisburg-Essen, Registration number: 15-6331-BO) and registered in the German clinical trial register (DRKS, Unique identifier: DRKS00008749). Declarations: Ethics approval/institutional review boardThe study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the institutional ethics committee (Faculty of Medicine of the University Duisburg-Essen, Registration number: 15-6331-BO) and registered in the German clinical trial register (DRKS, Unique identifier: DRKS00008749).: Consent to participate/informed consent statementInformed consent was obtained from all subjects involved in the study.: Conflict of interestThe authors declare no competing interests. Ethics approval/institutional review board: The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the institutional ethics committee (Faculty of Medicine of the University Duisburg-Essen, Registration number: 15-6331-BO) and registered in the German clinical trial register (DRKS, Unique identifier: DRKS00008749)."