Antimicrobial		Integron	No Integron	χ2 (p value)*	Odds Ratio (95% CI)**
Amikacin	S***	162	136	8.54 (0.0035)	5.32
	NS	19	3		(1.54, 18.35)
Gentamicin	S	81	112	42.15 (<0.0001)	5.12
	NS	100	27		(3.07, 8.55)
Tobramycin	S	72	109	47.77 (<0.0001)	5.5
	NS	109	30		(3.33,9.09)
Ampicillin	S	9	21	9.51 (0.002)	3.4
	NS	172	118		(1.51,7.69)
Ciprofloxacin	S	41	43	2.79 (0.0951)	1.53
	NS	140	96		(0.93,2.52)
Chloramphenicol	S	46	62	12.95 (0.0003)	2.36
	NS	135	77		(1.47,3.79)
Ceflazidime	S	89	91	8.48 (0.0036)	1.96
	NS	92	48		(1.24,3.09)
Cefotaxime	S	98	94	5.95 (0.0147)	1.77
	NS	83	45		(1.12,2.80)
Cefpodoxime	S	69	69	4.25 (0.0392)	1.6
	NS	112	70		(1.02,2.50)
Cefepime	S	161	124	0.005 (0.9415)	1.03
	NS	20	15		(0.51,2.09)
Aztreonam	S	97	93	5.78 (0.0162)	1.75
	NS	84	46		(1.11,2.77)

^*from Chi Square

^**odd ratios and 95% confidence intervals for non-susceptibility

^***NS - not susceptible (resistant plus intermediate where applicable); S - Susceptible