Skip to main content

Table 1 Baseline characteristics of the two validation cohorts

From: Bedside quantification of dead-space fraction using routine clinical data in patients with acute lung injury: secondary analysis of two prospective trials

 

Mayo n= 109

ARDS-net n= 1,896

Age in years, median (IQR)

62 (50-72)

50 (38-64)

Female gender, n (%)

56 (51.4)

845 (44.6)

Predicted hospital death, median (IQR)

0.43 (0.19-0.70)

0.31 (0.14-0.58)

PaO2/FiO2 day 1, median (IQR)

118 (82.5-164)

145 (108-195)

PaO2/FiO2 day 3, median (IQR)

175 (117, 241)

155 (114.5-207)

Tidal volume (ml) day 1, median (IQR)

420 (360-500)

420 (350-500)

PEEP (mmH20) day 1, median (IQR)

8 (5-12)

10 (8-14)

Estimated dead-space (%) day 1, median (IQR)

72.5 (64-78.7)

66.3 (57.5-73.6)

Estimated dead-space (%) day 3, median (IQR)

70.8 (61.2-76.3)

68.2 (59.6-75.1)

Hospital mortality n (%)

37 (34)

560 (29.5)

Duration of mechanical ventilation median (IQR) (days)

6 (3-11)

10.5 (6-19)

  1. ARDS-net, acute respiratory distress syndrome-network; FiO2, fraction of inspired oxygen; IQR, interquartile range; PaO2, partial pressureof arterial pressure; PEEP, positive end-expiratory pressure.