Validation study of GRACE risk scores in indigenous and non-indigenous patients hospitalized with acute coronary syndrome

Table 3 C-statistics* and 95 % CI for three GRACE models for prediction of death at different time points for Aboriginal and non-Aboriginal ACS patients

	c-statistic (95 % CI)
Group (H-L p-value)*	In-hospital	6 months	One year	Five years
GRACE score on admission : death in-hospital
Aboriginal	0.76
(0.63)	(0.62–0.91)
Non-Aboriginal	0.76
(0.58)	(0.68–0.84)
GRACE score on admission : death within 6 months of admission
Aboriginal		0.76	0.78	0.77
(0.10)		(0.62–0.89)	(0.65–0.91)	(0.70–0.85)
Non-Aboriginal		0.79	0.76	0.75
(0.75)		(0.74–0.84)	(0.71–0.82)	(0.71–0.80)
GRACE score at discharge : death within 6 months of discharge
Aboriginal	-	0.75	0.77	0.76
(0.30)		(0.56–0.94)	(0.63–0.92)	(0.68–0.84)
Non-Aboriginal	-	0.77	0.78	0.76
(0.87)		(0.71–0.84)	(0.72–0.83)	(0.72–0.80)

ISSN: 1471-2261