Table 3.

The Yield of Follow-Up Blood Cultures^a

	Total	Positive	The Yield of FUBC (%)	P Value
		FUBC	(95% CI)
All patients with FUBC	306	28	9.2 (6.2–13.0)	–
Patients with ≥1 risk factors	155	23	14.8 (9.7–21.4)	–
Patients with no risk factors	151	5	3.3 (1.1–7.6)	.001

Abbreviations: CI, confidence interval; ESBL, extended-spectrum β-lactamase; ESRD, end-stage renal disease; FUBC, follow-up blood culture.

^aRisk factors: ESRD on hemodialysis, intravascular device, and ESBL or carbapenem-producing organism.