TABLE 2.

Correlation coefficients of resistance to different drugs used to treat Klebsiella pneumoniae infection in a general hospital in the United States^a

Drug	Correlation coefficientb
	AMP	SAM	FEP	FOX	CAZ	CRO	CIP	GEN	IPM	LVX	NIT	SXT
AMK	0.031	0.304***	0.266***	0.218***	0.451***	0.442***	0.425***	0.174***	0.247***	0.432***	0.098**	0.279***
AMP		0.098**	0.042	0.064*	0.066*	0.067*	0.073*	0.042	0.027	0.072*	0.319***	0.077*
SAM			0.406***	0.417***	0.623***	0.645***	0.558***	0.342***	0.279***	0.542***	0.183***	0.466***
FEP				0.356***	0.603***	0.605***	0.458***	0.270***	0.447***	0.452***	0.081**	0.366***
FOX					0.410***	0.400***	0.436***	0.227***	0.379***	0.446***	0.180***	0.213***
CAZ						0.909***	0.683***	0.414***	0.367***	0.668***	0.160***	0.447***
CRO							0.696***	0.464***	0.382***	0.672***	0.165***	0.489***
CIP								0.410***	0.308***	0.982***	0.174***	0.472***
GEN									0.207***	0.375***	0.103***	0.374***
IPM										0.314***	0.086**	0.232***
LVX											0.169***	0.483***
NIT												0.127***

^aData source, WHONET (n = 1,095). AMK, amikacin; AMP, ampicillin; SAM, ampicillin-sulbactam; FEP, cefepime; FOX, cefoxitin; CAZ, ceftazidime; CRO, ceftriaxone; CIP, ciprofloxacin; GEN, gentamicin; IPM, imipenem; LVX, levofloxacin; NIT, nitrofurantoin; SXT, trimethoprim-sulfamethoxazole.

^b***, P < 0.001; **, P < 0.01; *, P < 0.1.