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Table 6 Analysis of possible predictors of ventilator-associated pneumonia (n = 83)

From: Biofilm formation on three different endotracheal tubes: a prospective clinical trial

  Univariable analysis
Factor OR 95% CI p value
ETT type
 PVC (reference) NA NA NA
 SC 0.66 0.14–3.16 0.606
 NbMC 0.54 0.13–2.26 0.400
Age 0.96 0.92–0.99 0.046
Sex, male 0.68 0.19–2.48 0.563
Days with invasive ventilation 1.11 1.01–1.22 0.026
High-grade biofilm formation on ETT 4.17 1.14–15.3 0.031
Colonized 1.52 0.44–5.26 0.505
  1. “Colonized” refers to patients colonized with common VAP pathogens in surveillance (oropharyngeal or endotracheal) cultures. Abbreviations: OR odds ratio, CI confidence interval, ETT endotracheal tube, PVC polyvinyl chloride, SC silicone-coated, NbMC noble-metal-coated, NA not applicable