Preoperative predictors of portal vein thrombosis after splenectomy with periesophagogastric devascularization

Table 2 Analysis of respective variables

Variable(s)	Area under the curve	Cut-off value	Sensitivity (%)	Specificity (%)	Cases above the value	Cases with PVT	Cases under the value	Cases with PVT	χ2value	P value
Vmax	0.865	24.45 cm/s	87.9	75	31	4	38	29	27.51	< 0.05
Vmax/D	0.893	19.4333/s	93.9	77.8	30	2	39	31	36.04	< 0.05
CI	0.884	0.1138 cm/s-1	87.9	86.1	34	29	35	4	37.71	< 0.05
D	0.742	13.5 mm	81.8	63.9	40	27	29	6	14.76	< 0.05

PVT: Portal vein thrombosis; CI: Congestion index; V_max: The mean maximum portal blood flow velocity; D: Portal vein diameter.