Hyperoxaemia in acute trauma is common and associated with a longer hospital stay: a multicentre retrospective cohort study

Table 3 Multivariable analysis for the primary outcome (28-day mortality)

28-day mortality	aOR	(95% CI)	p-value
Oxygen groups
Hypoxaemia	1.47	[0.83; 2.60]	0.190
Normoxaemia [reference]	1.00
Hyperoxaemia	0.92	[0.56; 1.52]	0.756
Severe hyperoxaemia	1.03	[0.56; 1.90]	0.917
Age [per year]	1.05	[1.04; 1.07]	< 0.001
SBP [per mmHg]*	0.99	[0.99; 1.00]	0.001
Intubation (prehospital)	4.21	[2.76; 6.43]	< 0.001
ISS [per point]	1.05	[1.03; 1.07]	< 0.001
AIS head	1.28	[1.14; 1.43]	< 0.001
AIS face	0.68	[0.54; 0.84]	< 0.001
AIS neck	1.30	[1.01; 1.66]	0.038

aOR, adjusted Odds Ratio; AIS, Abbreviated Injury Scale; ISS, Injury Severity Score; SBP, Systolic Blood Pressure
^*0.6% of the values were imputed

ISSN: 1757-7241