Table 5.

Area under the curve for ROC curve analysis of radiological indices

	AUC	95% CI	p-value
Cast index	0.83	0.75–0.92	< 0.001
Padding index	0.75	0.66–0.84	< 0.001
Canterbury index	0.76	0.67–0.85	< 0.001
3-point index	0.82	0.74–0.91	< 0.001

ROC: receiver operating characteristic; AUC: area under the curve; CI: 95% confidence interval.