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Sensitivity and specificity of PIV score and ability to predict R1 resection status. PIV=Predictive index value, R0=no gross residual disease, R1=any gross residual disease, PPV=positive predictive value, NPV=negative predictive value.
| Laparoscopic PIV score | R0 | R1 | Sensitivity (%) | Specificity (%) | Accuracy (%) | PPV | NPV |
|---|---|---|---|---|---|---|---|
| < 8 | 117 | 20 | 48.7 | 71.3 | 67.0 | 28.8 | 85.4 |
| ≥ 8 | 47 | 19 | |||||
