BMC Gastroenterology

Table 4 Sensitivity analysis of the AIS-GIB in the derivation and two validation cohorts

From: Risk score to predict gastrointestinal bleeding after acute ischemic stroke

	Derivation cohort		Internal validation cohort		External validation cohort
	(n = 8,820)		(n = 5,882)		(n = 2,938)
	AUROC	95% C.I.	AUROC	95% C.I.	AUROC	95% C.I.
Overall cohort	0.794	0.764-0.825	0.780	0.740-0.820	0.755	0.710-0.818
Subgroups
Age
≤60	0.800	0.747-0.854	0.778	0.707-0.848	0.816	0.734-0.898
≥61	0.777	0.738-0.815	0.771	0.720-0.823	0.737	0.698-0.789
Gender
Male	0.797	0.757-0.837	0.795	0.748-0.842	0.756	0.701-0.829
Female	0.795	0.749-0.841	0.748	0.702-0.819	0.740	0.698-0.845
Length of hospital stay
<7 days	0.786	0.730-0.841	0.792	0.708-0.876	0.713	0.639-0.786
7-14 days	0.814	0.739-0.890	0.787	0.715-0.880	0.731	0.679-0.843
>14 days	0.770	0.728-0.812	0.756	0.702-0.809	0.725	0.699-0.856

Abbreviations: AUROC area under the receiver operating characteristic curve, C.I. confidence interval.

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