Impact of a Multimodal Antimicrobial Stewardship Program on Pseudomonas aeruginosa Susceptibility and Antimicrobial Use in the Intensive Care Unit Setting

Table 2

Assessment of correlation between P. aeruginosa resistance and antibiotic usage.

Parameters	Correlation coefficient (r)	r ^2	P value
Univariate assessments
Ciprofloxacin	0.593	0.351	.121
Ceftazidime	0.338	0.114	.413
Cefepime	0.734	0.538	.097
Piperacillin-tazobactam	0.386	0.149	.450
Carbapenems	0.219	0.048	.602
Gentamicin	0.374	0.139	.362
Tobramycin	0.184	0.034	.664
Bivariate assessments ^†
Ciprofloxacin resistance	−0.735	−0.540	.038
Tobramycin usage
Ceftazidime resistance	0.966	0.934	.002
Cefepime use

^†Only relationships with P values <.05 are listed.