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Table 2 Susceptibility of E. coli, S. aureus , and S. pneumoniae isolates by patient age and location, Mayo Clinic Rochester, MN

From: Comparison of hospital-wide and age and location - stratified antibiograms of S. aureus, E. coli, and S. pneumoniae: age- and location-stratified antibiograms

	<18 y			18-64 y			≥65 y
	IP	OP	p-value	IP	OP	p-value	IP	OP	p-value
*E. coli*	n = 39	n = 267		n = 318	n = 1105		n = 499	n = 1116
Ampicillin	28%	51%	0.008	48%	57%	0.005	58%	55%	0.19
AMP-SLB	30%	41%	0.19	40%	50%	0.004	52%	50%	0.51
Cefazolin	77%	96%	<0.001	86%	93%	<0.001	90%	92%	0.24
Ceftriaxone	87%	98%	0.004	93%	97%	0.01	96%	98%	0.12
Gentamicin	87%	97%	0.022	89%	93%	0.026	91%	90%	0.64
Ciprofloxacin	82%	96%	0.001	73%	83%	<0.001	73%	71%	0.38
TMP-SMX	59%	77%	0.015	74%	74%	0.91	81%	74%	0.002
Nitrofurantoin	100%	99%	0.99	95%	98%	0.15	97%	97%	0.96
*S. aureus*	n = 91	n = 317		n = 533	n = 957		n = 479	n = 577
Oxacillin or Cefazolin	77%	78%	0.88	66%	73%	0.003	52%	65%	<0.001
Clindamycin	81%	82%	0.78	62%	73%	<0.001	49%	65%	<0.001
Levofloxacin	88%	91%	0.51	64%	78%	<0.001	45%	58%	<0.001
TMP-SMX	100%	100%	n/a	99%	99%	0.96	99%	98%	0.039

Inpatient (IP), outpatient (OP), ampicillin-sulbactam (AMP-SLB), trimethoprim-sulfamethoxazole (TMP-SMX), oxacillin (ox), cefazolin (cef).

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