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. 2019 Jan 24;43(9):2009–2016. doi: 10.1007/s00264-019-04298-x

Table 4.

The cumulative antibiogram report, prepared in compliance with the Formula for Rational Empiric Antimicrobial Therapy (FRAT)

Pathogen %I Amikacin Ceftazidime Ciprofloxacin Imipenem
%S IF %S IF %S IF %S IF
Coagulase-negative staphylococcus 20.1 6 1.2 n/a n/a 24 4.8 n/a n/a
Staphylococcus aureus 16.2 50 8.1 n/a n/a 53 7.0 n/a n/a
Acinetobacter baumannii 10.2 3 0.3 0 0 4 0.4 17 1.7
Escherichia coli 6.0 82 4.9 71 4.3 65 4.0 100 6
Klebsiella pneumoniae 5.5 60 3.9 38 2.1 46 2.5 100 5.5
Enterobacter cloacae 5.2 95 4.9 71 3.7 87 4.5 100 5.2
Proteus mirabilis 5.0 67 3.4 68 3.4 50 2.5 29 1.5
Pseudomonas aeruginosa 5.0 100 5.0 89 4.5 68 3.4 80 4
Percentage of overall activity 43.3 24.6 29.8 32.7

n/a not available; %I percentage frequency of isolation, %S percentage sensitivity of pathogen to antibiotic, IF antimicrobial impact factor: the likelihood that a pathogen would be sensitive to an antimicrobial drug, (%I × %S) ∕ 100