Pruitt P, et al. - This study aims to test the hypothesis that a decision rule can identify patients with subdural hematoma (SDH) who are at very low-risk for the neurological decline, neurosurgical intervention or radiographic worsening. The authors reveal that SDHs are amenable to risk stratification analysis. This decision instrument may aid in triaging these patients with prospective validation, including reducing the need for transfer to tertiary centers.