Endoscopic ultrasound-guided elastography in the nodal staging of oesophageal cancer

Table 3 The area under the curve for receiver operating curve characteristics for each endoscopic ultrasound-based modality for distinguishing benign from malignant nodes

	ROC AUC	P value1
Strain ratio	0.87 (0.75-1.00)	NA
Number of conventional criteria	0.79 (0.66-0.92)	0.2846
Size > 1cm	0.62 (0.48-0.76)	0.0078
Shape round	0.75 (0.62-0.87)	0.1329
Clear edge	0.62 (0.48-0.76)	0.0035
Hypodense	0.69 (0.55-0.82)	0.0100

¹Comparison with strain ratio. The P value determined relates to the area under the curve (AUC) of an individual characteristic compared to elastography strain ratio receiver operating characteristics (ROC) AUC. NA: Not available.