Table A6.

12 h Cut-Off.

	Loglik	Chisq	df	p (>|Chi|)
1	−3053.17
2	−3055.74	5.14	3	0.1615

Table A6: 12 h Cut-Off, 8 mL/kg Threshold Last-One-Forward, Minute-Increment Model with Hours in Perpetuity Weighted by the Charted Tidal Volume’s Percent Over the 8 mL/kg Threshold: Partial likelihood ratio test comparing models with and without any terms involving perpetuity. Model with perpetuity has main effect of perpetuity, interaction of perpetuity and age, interaction of perpetuity and O₂, and other covariates. Reduced model removes the three named terms but still contains the other covariates. Both models incorporate non-linear effects of hours in acuity and HR1.