Skip to main content

Table 1 Predictors of focal ARDS

From: Identification of focal ARDS using PF ratio: a cross-sectional study

  N Focal ARDS OR (95% CI) P value
All patients 152 16 (10.3%) NA NA
ARDS severitya
 Mild 39 4 (10.3%)b,c Reference Reference
 Moderate 62 4 (6.5%)b,c 0.60 (0.14–2.57) 0.494
 Severe 51 8 (15.7%)b,c 1.62 (0.45–5.86) 0.456
PF ratio < 150 mmHg 86 10 (11.6%) 1.32 (0.45–3.83) 0.614
PF ratio (mmHg) 152 16 (10.3%) 1.00 (0.99–1.01) 0.691
  1. aMild ARDS: PF ratio 201–300 mmHg and PEEP ≥ 5 cmH2O. Moderate ARDS: PF ratio 101–200 mmHg and PEEP ≥ 5 cmH2O. Severe ARDS: PF ratio ≤ 100 mmHg and PEEP ≥ 5 cmH2O
  2. bFisher exact test, P = 0.275
  3. cChi-square test for trend, P = 0.345
  4. ARDS acute respiratory distress syndrome, CI confidence interval, NA not applicable, OR odds ratio, PEEP positive end-expiratory pressure, PF ratio partial pressure of oxygen in arterial blood divided by the inspired oxygen fraction