Table 2.

Estimated mean of covariates in two subpopulations and the posterior mean of absolute standardized differences by comparing between these two subpopulations. The second column corresponds to the mean of covariates in the identified likely always-survivors, and the third column corresponds to the posterior mean of the average covariate value in the latent always-survivor stratum

Covariates	${\mathbb{S}}_1\cup {\mathbb{S}}_{\left(\mathrm{0.8,1}\right)}$	(Latent) always-Survivors	Posterior mean of ASD
Age	50.34	50.34	0.0019
Sex (female) (%)	0.386	0.385	0.0019
Race (White) (%)	0.271	0.270	0.0016
Tidal volume (ml)	678.74	678.75	0.0012
PEEP (cm water)	8.21	8.21	0.0015
${\text{PaO}}_2$ (mmHg)	85.35	85.32	0.0014
${\text{FiO}}_2$ (mmHg)	0.606	0.606	0.0026
${\text{PaCO}}_2$ (mmHg)	36.57	36.58	0.0012
${\text{PaO}}_2/{\text{FiO}}_2$ (PtoF)	155.04	154.91	0.0023
${\text{AaDO}}_2$	306.40	306.75	0.0027
Arterial pH	7.4096	7.4096	0.0016
APACHE III	76.39	76.40	0.0017
Systolic BP	100.15	100.13	0.0012
Glasgow coma scale	11.28	11.28	0.0016
Platelet (count/nl)	117.26	117.43	0.0031
Creatine (mg/dl)	1.117	1.115	0.0013
Bilirubin (mg/dl)	0.868	0.866	0.0014
Vasopressors (%)	0.724	0.724	0.0015