Table 2.

Pooled mean and key percentiles of resistance densities (RD = number of resistant isolates/1,000 pd and antimicrobial resistance proportions (RP = number of resistant isolates/100 tested isolates) and) of selected pathogens from SARI ICUs (n = 40), 2001–2004 and temporal differences in RD between 2001 vs 2004 (data of 34 SARI ICUs providing resistance data from 2001 through 2004).

Pathogen	Resistant to	Rooled RD (RP%) of all SARI-ICUs 01/2001–12/2004					RD from 34 SARI ICUs providing resistance data from 2001 to 2004
		No tested	Pooled mean	25% percentile	Median	75% percentile	No ICUs** in analysis	Year 2001 median RD	Year 2004 median RD	No. of ICUs with an increase/decrease/no change of RD from 2001 to 2004
S. aureus	MethiciLLin	12,238	4.4 (21.5%)	1.92 (12.0%)	3.34 (21.2%)	4.8 (32.1%)	30	2.7	3.7	18/12/0
E. faecalis	Vancomycin	5,371	0.0 (0.1%)	0.0 (0%)	0.0	0.0	27	0	0	0/1/26
E. faecium	Vancomycin	1,945	0.1 (2.6%)	0.0 (0%)	0.0	0.1 (3.3%)	11	0	0	2/3/6
K. pneumoniae	Third gen. cephalosporins	3,205	0.4 (7.5%)	0.0 (0%)	0.1 (2.0%)	0.3 (6.5%))	20	0	0.2	9/3/8
E. coli	Third gen. cephalosporins	8,110	0.3 (2.3%)	0.0 (0%)	0.2 (1.7%)	0.5 (3.5%)	27	0	0.2	14/6/7*
	Ciprofloxacin	7,152	1.5 (12.3%)	0.5 (8.3%)	1.3 (12.0%)	2.0 (16.6%)	27	1.1	1.8	20/5/2*
P. aeruginosa	Imipenem	4,442	1.7 (23.2%)	0.4 (8.4%)	1.1 (18.6%)	2.4 (26.6%)	21	2.0	1.1	5/16/0
	Ceftazidime	5,005	1.3 (15.6%)	0.4 (6.5%)	1.0 (11.1%)	2.0 (20.5%)	26	0.6	1.1	14/12/0
	Ciprofloxacin	5,009	1.5 (17.6%)	0.5 (8.6%)	1.2 (15.4%)	2.2 (26.2%)	26	1.2	1.0	10/14/2
	Piperacillin-tazobactam	4,058	1.5 (22.0%)	0.3 (8.7%)	0.0 (15.7%)	3.5 (36.7%)	21	1.6	1.4	9/12/0

“Resistant to third generation cephalosporins” i.e. cefotaxim or ceftiaxon or ceftazidime; *if p-value < 0.05 by Wilcoxon signed-rank test for paired samples 2001 vs 2004; ** ICUs with on at least ten isolates tested per antimicrobial/pathogen per year