Table 1. Statistical correlation of different virulence factors with P. aeruginosa strains MDR/XDR phenotypes.

Virulence Factor	MDR/XDR			Total	P	OR(95% CI)
		–	+
DNAase	–	24	25	49	0.343
	+	70	57	127
Gelatinase	–	10	16	26	0.106
	+	84	66	150
Hemolysin	–	22	13	35	0.044	2.3(1.0-5.3)
	+	72	69	141
Pyoverdine	–	11	3	14	0.062
	+	83	79	162
Fluorescein	–	69	64	133	0.479
	+	25	18	43
Pyomelanin	–	89	77	166	0.725
	+	5	5	10
Swarming	–	50	44	94	0.996
	+	41	33	74
Twitching	–	43	54	97	0.005	0.4(0.2-0.8)
	+	48	23	71
Swimming	–	51	51	102	0.271
	+	40	26	66
Movement	–	17	31	48	0.004	0.4(0.2-0.7)
	+	77	51	128
Biofilm	–	56	45	101	0.776
	+	38	37	75
exoS	–	87	76	163	0.974
	+	7	6	13
exoU	–	71	38	109	<0.001	3.6(1.9-6.8)
	+	23	44	67
Integrase I	–	70	43	113	0.003	2.7(1.4-5.0)
	+	24	39	63

P: probability, OR: Odds Ratio, CI: confidence interval.