Table 4.

Comparisons of CRISPR-associated (cas) genes between phage susceptible and resistant A. baumannii.

Characteristics	No. of isolates		p-values*
	Phage susceptible (n = 107)	Phage resistant (n = 123)
cas1 positive	11/107 (10.28%)	21/123 (17.07%)	0.1376
cas2 positive	0/107 (0.00%)	2/123 (1.67%)	NC
cas3 positive	9/107 (8.41%)	21/123 (17.07%)	0.0517
cas5 positive	8/107 (7.47%)	26/123 (21.14%)	0.0036
cas6 positive	2/107 (1.87%)	5/123 (4.06%)	NC
cas9 positive	0/107 (0.00%)	0/123 (0.00%)	NC
Positive for two or three cas-types	9/107 (8.41%)	23/123 (18.70%)	0.0245

Bold font indicates statistically significant difference between two groups.

NC not comparable.

*p-values less than 0.05 were considered as statistically significant difference (Fisher's exact test).