Table 4.

Association between mutation in codons 83 and 106 gyrA gene and norfloxacin resistance among E. coli isolates

Resistance pattern		Resistant		Intermediate- resistant		Susceptible		P -value
Mutation		No.	%	No.	%	No.	%
gyrA 83	Yes	68	55.3	1	0.8	53	43.9	0.002
	No	33	33	0	0	67	67	0.002
gyrA 106	Yes	38	84.4	0	0	7	15.6	<0.001
	No	63	35.4	1	0.6	114	64	<0.001
gyrA 83 &106	Yes	30	88.2	0	0	4	11.8	<0.001
	No	71	37.6	1	0.5	117	61.9	<0.001