highly significantp < 0.0043
Portal vein flow velocity decreased in the NLS group (27 cm/s before KPE to 23 cm/s 3 months after KPE, p < 0.001), but remained unchanged in the KPE failure group. Portal vein flow velocity before KPE compared with 6-month NLS The logistic regression analysis of each patient's portal vein flow velocity before KPE reveals a highly significant difference ( p < 0.0043) and a predictive value for NLS at 6 months post-KPE of AUC = 0.8371 (Fig. 2 panel D1).