TABLE 2.

P values for pairwise comparisons between strain groups according to similarity of extended virulence genotypes

Isolate source and group (n)a	Descriptionb	P value for difference between groupsc
		Group 1	Group 2	Group 3	Group 4	Group 5d
Fecal
Group 0 (38)	Non-ST131, susceptible	0.30	<0.001	<0.001	<0.001	0.55
Group 1 (8)	Non-ST131, resistant		0.008	<0.001	0.006	0.92
Group 2 (12)	ST131			0.45	<0.001	0.001
Clinical
Group 3 (12)	ST131				<0.001	<0.001
Group 4 (38)	Non-ST131, susceptible					0.08

^aFecal, stool isolate from this study; clinical, clinical isolate from 2011 national VA survey (5); n, number of isolates.

^bSusceptible, susceptible to fluoroquinolones and extended-spectrum cephalosporins (ESCs); resistant, resistant to fluoroquinolones and/or ESCs.

^cP values were determined by PERMANOVA for pairwise comparisons between isolate groups based on Dice similarity.

^dGroup 5, clinical, non-ST131 resistant isolates (n = 8).