Table 2.

Results of the ROC analyses of two equine populations (SHP and GP), 60 min after i.v. injection of an ACTH analogue

Population	Cut-off	Se	95% CI	Sp	95% CI	ROC-AUC	95% CI	ROC AUC’s SE	P-value
SHP	4.92	100%	54–100%	75%	51–91%	91%	69–98%	0.06001	0.0000
GP	4.04	75%	48–93%	52%	37–67%	68%	51–79%	0.07043	0.0064

For each population, the cut-off value (Cut-off) with best sensitivity (Se) (including its 95% CI), specificity (Sp) (including its 95% CI), area under the ROC-curve (ROC-AUC) [including its 95% CI and its standard error (ROC-AUC’s SE)] and 1-Sided P-value (P-value) is given.

ACTH = adrenocorticotropic hormone; CI = confidence interval; GP = the general population; ROC = receiver-operating characteristic; SHP = sport horse population