Predictive Value of Gray-Matter–White-Matter Ratio on Brain Computed Tomography for Delayed Encephalopathy after Acute Carbon Monoxide Poisoning: A Retrospective Cohort Study

Table 3

Receiver operating characteristic curve analysis.

Variable	Area under ROC curve	95% confidence interval	Cut-off	Sensitivity (%)	Specificity (%)	Youden index
GWR-basal ganglia	0.881	0.783–0.983	1.055	93.8	68.7	0.625
GWR-average	0.776	0.681–0.871	1.085	66.7	75.0	0.417
GWR-cerebrum	0.726	0.649–0.802	1.115	52.7	100	0.473

GWR: gray-matter–white-matter ratio; ROC: receiver operating characteristic.