. 2022 Oct 10;10:e14140. doi: 10.7717/peerj.14140

Table 3. Univariable and multivariable Cox proportional hazards regression analysis to predict six-month mortality in patients with severe acute respiratory distress syndrome with extracorporeal membrane oxygenation support.

	Univariable			Multivariable
	Hazard ratio	95% CI	p-value	Hazard ratio	95% CI	p-value
Age, per additional year	1.05	1.01–1.10	0.018	1.06	1.01–1.12	0.015
PaCO₂, mmHg	1.04	1.02–1.06	<0.001	1.04	1.02–1.07	<0.001
Inhaled nitric oxide	2.49	1.07–5.84	0.035
Steroid exposure	2.52	1.13–5.62	0.024
Mean respiratory rate>12/min on the first 3 days after ECMO setup	4.44	1.51–13.02	0.007	3.31	1.10–9.97	0.034

Notes.