Table 3 Positive and negative likelihood ratios for predicting death or more than 14 days of ventilator dependency

VENTILA

Model (≤ 3.0)

LR+

2.52 (1.57 to 4.07)

LR-

0.56 (0.46 to 0.69)

Model (≤ 3.5)

LR+

3.53 (1.72 to 7.24)

LR-

0.68 (0.59 to 0.79)

Oxygenation index (≤ 15)

LR+

1.98 (1.22 to 3.21)

LR-

0.72 (0.6 to 0.86)

PaO₂/FiO₂ (≤ 150)

LR+

1.77 (1.2 to 2.62)

LR-

0.70 (0.58 to 0.85)

ARDS-net

Model (≤ 3)

LR+

3.15 (2.38 to 4.19)

LR-

0.40 (0.33 to 0.48)

Model (≤ 3.5)

LR+

6.86 (4.1 to 11.47)

LR-

0.51 (0.46 to 0.58)

Oxygenation index (≤ 15)

LR+

2.18 (1.71 to 2.77)

LR-

0.52 (0.44 to 0.62)

PaO₂/FiO₂ (≤ 150)

LR+

1.98 (1.6 to 2.45)

LR-

0.57 (0.49 to 0.66)

KCLIP

Model (≤ 3)

LR+

1.56 (1.3 to 1.87)

LR-

0.45 (0.34 to 0.6)

Model (≤ 3.5)

LR+

1.83 (1.42 to 2.37)

LR-

0.58 (0.47 to 0.71)

Oxygenation index (≤ 15)

LR+

1.75 (1.33 to 2.32)

LR-

0.67 (0.56 to 0.8)

PaO₂/FiO₂ (≤ 150)

LR+

2.22 (1.69 to 2.92)

LR-

0.62 (0.54 to 0.72)