Compared with patients with a preoperative serum occludin level < 3.015 ng/mL, those with an occludin level ≥ 3.015 ng/mL had a significantly higher NIHSS score at admission (3.60 ± 0.48 vs. 2.31 ± 0.42; P < 0.001; Figure 5(a)) and significantly higher incidence of severe PTBE at admission (65.3% vs. 15.2%; P < 0.001; Figure 5(b)) but similar GCS score at admission (14.47 ± 1.60 vs. 14.85 ± 0.70; P = 0.219; Figure 5(a)) and similar incidence of intracranial hemorrhage at 1 day after surgery (20.0% vs. 20.0%; P = 1.000; Figure 5(b)). Here, OCLN is linked to intracranial hemorrhage.