Table 4.

Fine-Gray subdistribution hazard model for the association between logLDAR and 28-day ICU mortality accounting for the competing risk of alive ICU discharge.

Cohort	Variable	sHR	95% CI	P value
Derivation	logLDAR (continuous)	1.36	1.27-1.46	<0.001
Derivation	Moderate vs. Low	1.47	1.13-1.92	0.004
Derivation	High vs. Low	2.59	2.02-3.31	<0.001
External	logLDAR (continuous)	1.53	1.29-1.81	<0.001
External	Moderate vs. Low	3.12	1.12-8.70	0.030
External	High vs. Low	6.58	2.46-17.60	<0.001

sHR , subdistribution hazard ratio from Fine-Gray competing risk model. Competing event = alive ICU discharge. Derivation cohort adjusted for the same covariates as Cox Model 2. External cohort adjusted for Age and AKI only (EPV = 14.7).