Table 7. Relationship between the overexpression of RND pumps and sampling sites

	MexAB-OprM	MexCD-OprJ	MexEF-OprN	MexXY-OprM	Total of isolated strains1)
Respiratory	5	12	25	2	43
Non-respiratory	1	1	7	1	17
Total of overexpression strains	6	13	32	3
Fisher’s exact test for count data (p-value)	0.665	0.086	0.3682)	1

The total number of strains that were isolated from each type of sampling site, including efflux overexpression strains and non – overexpression strains.
Obtained by using Pearson’s Chi-squared test with Yates’ continuity correction.
RND, resistance nodulation division.