Table 4.

Multivariable analysis of factors associated with CTX-M-9-grp Enterobacteriaceae infections in children

Associated factors with CTX-M-9-grp Ent infectiona,c	OR	95% CI	P value
Infection with E. coli	7.4	2.4, 27.2	0.001
Home residence in South region (South Chicago and South suburbs)b	6.7	1.1, 37.9	0.03
Race not White, Black or Hispanic	7.4	2.4, 28.2	0.002
Outpatient clinic location at time of infection diagnosis	4.5	1.7, 12.3	0.003
Home residence in Northwest region (NW Chicago and NW suburbs)	0.19	0.04, 0.90	0.03

^aEnt, Enterobacteriaceae

^bReference region, West region

^cControl group was children with Ent infections sensitive to extended-spectrum cephalosporins