Table 1.

Estimated area under the ROC and inference for the four scoring methods. The standard error was estimated using method proposed by DeLong and colleagues (1988)

Scoring system	Area under ROC	Standard error	95% Confidence interval
POLYCLASS	0.93	0.01	0.90, 0.97
NIHSS Score	0.89	0.02	0.84, 0.94
CNS Score	0.69	0.04	0.61, 0.77
GHS Score	0.84	0.03	0.78, 0.90

Abbreviations: CNS, Canadian Neurological Score; GHS, Guy’s Prognostic Score; NIHSS, National Institute of Health Stroke Scale; ROC, receiver operating characteristic curve.