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Table 4 Logistic regression analysis addressing the main risk factors for noninvasive positive pressure ventilation failure

From: Performance of noninvasive ventilation in acute respiratory failure in critically ill patients: a prospective, observational, cohort study

  Univariate analysis Multivariate analysis
Risk factors (predictors) OR 95 % CI P value OR 95 % CI P value
Age (years) 0.97 0.94–0.99 0.015 0.96 0.93–0.99 0.007
Male gender 2.24 0.86–5.83 0.100  
Mean arterial pressure (mmHg) 0.98 0.95–1.00 0.037
Heart rate (bpm) 1.02 1.00–1.05 0.037
APACHE II score 1.10 1.00–1.21 0.039 1.13 1.02–1.25 0.018
Arterial pH 0.95 0.89–1.01 0.116  
Bicarbonate (mmol/L) 0.87 0.78–0.97 0.009
Arterial lactate (mg/dL) 1.05 0.99–1.10 0.081
Transplantation 10.50 2.00–54.95 0.005
Acute respiratory distress syndrome 2.57 0.68–9.80 0.167
  1. OR Odds ratio, CI Confidence interval, APACHE II Acute physiology and chronic health evaluation II (The score can range from 0 to 71, with higher scores indicating more severe illness)