HIF1A and Intraventricular hemorrhage: Using univariate analysis, as compared to patients with good outcomes, those with poor outcomes showed substantially increased blood glucose levels, Hunt–Hess scores, and modified Fisher scores (all P < 0.05; Table 4), as well as had significantly increased percentages of serum HIF-1α levels of >384.0 pg/ml, previous use of anticoagulation drugs, diabetes mellitus, intraventricular hemorrhage, and hydrocephalus (all P < 0.05; Table 4).