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Table 4 Duration of antibiotic treatment and duration of hospital stay depending on the employed method of taking the material for microbiological diagnostics of VAP, Polish ICUs 2013–2015

From: Epidemiology of Ventilator-Associated Pneumonia, microbiological diagnostics and the length of antimicrobial treatment in the Polish Intensive Care Units in the years 2013-2015

  Duration of antibiotic treatment Length of ICU stay
PNEU-1a Other VAP casesb PNEU-1a Other VAP casesb
Average (95% CI) (days) 7 (6,8) 9 (8,10) 49 (29,69) 52 (33,70)
Median 7 8 31 31
Standard deviation 3 4 89 102
Minimum 1 3 11 2
Maximum 15 21 781 744
Pearson’s chi-square 2 = 8,35, df = 2, p < 0.05) 2 = 114, df = 69, p < 0.001)
  1. ICU Intensive Care Unit, VAP Ventilator-Associated Pneumonia
  2. aPNEU-1: pneumonia documented by invasive diagnostics, minimally contaminated lower respiratory tract sample with quantitative culture
  3. bOther VAP cases, documented by: PNEU-2 non-protected sample with quantitative culture; PNEU-3 alternative microbiological criteria; PNEU-4 sputum bacteriology or non-quantitative culture; PNEU-5 no microbiological documentation