Association between interhospital transfer status and outcomes following nontraumatic subdural hemorrhage.

Background: Patients with nontraumatic subdural hemorrhage often require immediate surgical intervention that may not be available at community hospitals and are therefore transferred to tertiary care centers. This study aims to evaluate the effects of interhospital transfer (IHT) on postoperative complications and outcomes following ntSDH.

Methods: The National Surgical Quality Improvement Program (NSQIP) database was queried for patients treated for ntSDH from January 2014 to January 2020.