Table 2

p Values for each interaction between the continuous baseline predictor and PEEP intervention for each outcome in the three included trials

Trial/predictor	60 days mortality	Time to death	Time to unassisted breathing
LOVS
BMI	0.7331	0.3537	0.7507
Estimated RC	0.1078	0.0957	0.3264
PaO₂/FiO₂	0.1247	0.0296	0.0325
Oxygenation index	0.4337	0.1259	0.2594
EXPRESS
BMI	0.6989	0.7091	0.7294
Estimated RC	0.6922	0.7053	0.4629
PaO₂/FiO₂	0.5511	0.6095	0.7587
Oxygenation index	0.3287	0.3041	0.9492
ALVEOLI
BMI	0.1844	0.0894	0.8589
Estimated RC	0.5438	0.7938	0.1192
PaO₂/FiO₂	0.9785	0.7647	0.2002
Oxygenation index	0.7908	0.8835	0.8046

BMI, body mass index; FiO₂, fraction of inspired oxygen; PaO₂, arterial partial oxygen pressure (mm Hg); PEEP, positive end-expiratory pressure; RC, respiratory compliance (tidal volume in mL/inspiratory plateau pressure−PEEP in mm Hg).