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Table 1 Comparison of the spectrum and ranking of microorganisms identified from blood cultures in 13 ICUs (1998–2004), analyzed by different data pre-processing methods.

From: Data correction pre-processing for electronically stored blood culture results: Implications on microbial spectrum and empiric antibiotic therapy

RDMa DFMb CFMc
Rank Microorganism n % Rank Microorganism n % Rank Microorganism n %
1 Staphylococcus epidermidis 448 31.4% 1 Staphylococcus epidermidis 305 32.1% 1 Staphylococcus aureus 123 20.6%
2 Staphylococcus aureus 198 13.9% 2 Staphylococcus aureus 123 12.9% 2 Staphylococcus epidermidis 80 13.4%
3 Candida albicans 96 6.7% 3 Pseudomonas aeruginosa 58 6.1% 3 Pseudomonas aeruginosa 58 9.7%
4 Pseudomonas aeruginosa 89 6.2% 4 Candida albicans 56 5.9% 4 Candida albicans 56 9.4%
5 Escherichia coli 71 5.0% 5 Escherichia coli 41 4.3% 5 Escherichia coli 41 6.9%
6 Enterobacter cloacae 63 4.4% 6 Enterobacter cloacae 36 3.8% 6 Enterobacter cloacae 36 6.0%
7 Enterococcus faecalis 45 3.2% 7 Enterococcus faecalis 29 3.0% 7 Enterococcus faecalis 29 4.8%
8 Enterococcus faecium 34 2.4% 8 Enterococcus faecium 27 2.8% 8 Enterococcus faecium 27 4.5%
9 Acinetobacter baumannii 26 1.8% 9 Klebsiella pneumoniae 16 1.7% 9 Klebsiella pneumoniae 16 2.7%
10 Staphylococcus haemolyticus 24 1.7% 10 Staphylococcus haemolyticus 15 1.6% 10 Acinetobacter baumannii 13 2.2%
  others 333 23.3%   Others 245 25.8%   others 119 19.9%
  Total 1427 100.0   Total 951 100.0   total 598 100.0
  1. a RDM = raw data method; b DFM = duplicate-free method; c CFM = contaminant-free method.