. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: J Intensive Care Med. 2021 Dec 13;37(7):899–907. doi: 10.1177/08850666211058646

Table 2.

Multivariable Regression Models for the Primary and Secondary Outcomes.

Lowest oxygen saturation	Adjusted mean difference	95% Confidence intervals	P value
Bag-mask ventilation, versus apneic oxygenation	4.23	0.67 to 7.79	.02
Age, years	0.02	−0.10 to 0.14	.75
BMI	−0.20	−0.40 to 0.00	.05
APACHE II score	0.02	−0.21 to 0.26	.86
Oxygen saturation at induction, (%)	1.13	0.77 to 1.49	<.001
Severe hypoxemia	Adjusted odds ratio	95% Confidence intervals	P value
Bag-mask ventilation, versus apneic oxygenation	0.33	0.09 to 1.18	.09
Age, years	0.98	0.94 to 1.02	.35
BMI	1.03	0.98 to 1.09	.28
APACHE II score	0.95	0.88 to 1.03	.20
Oxygen saturation at induction, (%)	0.88	0.80 to 0.98	.02

Abbreviations: APACHE II, Acute Physiology and Chronic Health Evaluation; BMI, body mass index.

The coefficient describes the increase in lowest oxygen saturation (%) or change in odds ratio associated with bag-mask ventilation compared to apneic oxygenation, an increase in age of 1 year, an increase in BMI of 1 kg/m², an increase in APACHE II score of 1 point, and an increase in oxygen saturation at induction of 1%.