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Table 2 Frequency of multiresistant bacteria from 32 VAP patients and their relation to death

From: Epidemiology and outcomes of ventilator-associated pneumonia in northern Brazil: an analytical descriptive prospective cohort study

Microorganism aFrequency n (%) bMultiresistance n (%) Death n (%)
Gram-positive    
  Staphylococcus aureus 5 (15.6) 4 (80.0) 5 (100)
Gram-negative    
  Pseudomonas aeruginosa 11 (34.4) 8 (72.7) 8 (72.7)
  Acinetobacter spp. 11 (34.4) 9 (81.8) 9 (81.8)
  Klebsiella spp. 5 (15.6) 2 (20.0) 4 (80.0)
  Stenotrophomonas maltophilia 2 (6.2) - 1 (50.0)
  Sphingomonas paucimobilis 2 (6.2) - 1 (50.0)
  Escherichia coli 1 (3.1) - 1 (100)
  Enterobacter spp. 2 (6.2) - 2 (100)
P value (G test) c 0.003 0.0083  
Total 39 23 31
  1. a Spearman correlation between death and frequency of microorganisms (ρ = 0.905, P = 0.0001).
  2. b Spearman correlation between death and presence of multiresistance (ρ = 0.947, P = 0.00144).
  3. c G Test of independence is evaluating the proportion of different microorganisms among them.