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Evolution over time of multi drug resistance prevalence rate expressed per 10,000 patient days. MRSA - methicillin-resistant Staphylococcus aureus, VRE - vancomycin-resistant enterococci, P. aeruginosa - multidrug resitant Psedomonas aeruginosa, ABB - Acinetobacter baumannii, ESBL - extened-spectrum beta-lactamases-producing organisms, *statistically significant result. Statistical test used One-way analysis of variance and post hoc multiple comparisons analysis (Tukey Kramer test).
