Table 1.

Mortality comparisons between patients kept and excluded from the PSM in two groups

	Used for PSM	Excluded from PSM	p
Early intubation group	N = 78	N = 59
Mortality rate* [n (%)]	35 (45.8%)	41 (69.0%)	0.004
Non-early intubation group	N = 78	N = 520
Mortality rate [n (%)]	26 (33.3%)	85 (16.3%)	< 0.001
P#	0.140	< 0.001

*The overall mortality rate was extracted from their supplementary Table S2 (mortality by day 60)

^#Comparisons between early intubation and non-early intubation groups