Table 2.

Results of blood cultures and short-term mortality

	All patients, n=140	Retrospective cohort, n=75	Prospective cohort, n=65	P value
BCNIE	75 (53.6%)	47 (62.7%)	28 (43.1%)	0.02
BCNIE with no organism or cause detected	53 (37.9%)	44 (57.4%)	9 (13.8%)	<0.01
In-hospital mortality BCPIE	10/65 (15.4%)	5/28 (17.9%)	5/37 (13.5%)	0.64
In-hospital mortality BCNIE	15/75 (20%)	11/47 (23.4%)	4/28 (14.2%)	0.35

BCNIE, blood culture negative infective endocarditis; BCPIE, blood culture positive infective endocarditis.