Table 4.
Performance of the portal vein diameter, spleen width and the platelet count/spleen width ratio for predicting the presence of EV.
| Variable | Best Cut-off | Se (%) | Sp (%) | +LR | -LR | PPV (%) | NPV (%) | DA (%) |
|---|---|---|---|---|---|---|---|---|
| Portal vein diameter (mm) | 12 | 83.5 | 56.8 | 1.93 | 0.29 | 85.1 | 53.8 | 76.7 |
| Spleen width (mm) | 46 | 71.6 | 75.7 | 2.94 | 0.38 | 89.7 | 47.5 | 72.6 |
| Platelet count/Spleen width | 1.0513 | 57.8 | 67.6 | 1.78 | 0.62 | 84.0 | 35.2 | 60.3 |
Se, sensitivity; Sp, specificity; +LR, positive likelihood ratio; -LR, negative likelihood ratio; PPV, positive predictive value; NPV, negative predictive value; DA, diagnostic accuracy; Prevalence of esophageal varices, 74.7% (109/146)