Table 5.

Spearman rank correlation coefficients of antibiotic susceptibility by year

r Value	Overall bacteria	Gram-positive cocci	Gram-negative bacilli
Levoflaxacin	−0.333	−0.717 *	−0.083
Tobramycin	−0.850 **	−0.933 *	−0.167
Neomycin	−0.619	−0.690	−0.524
Cefazolin	−0.933 **	−0.964 **	−0.833 **
Ceftazidime	−0.783 *	−0.929 **	−0.200
Ofloxacin	0.317	0.233	0.817 **
Chloramphenicol	−0.946 **	−0.929 **	−0.886 *
Cefuroxime	−0.771	−0.829 *	−0.029

Notes: Time trend analyses of Gram-negative cocci and Gram-positive bacilli were not performed due to small sample sizes. *P<0.05, **P<0.01.