Table 3.

Primary and secondary outcomes according to study group

Outcome	Pre-intervention group (n= 186)	Intervention group (n= 43)	Adjusted Odds Ratio or Between-Group Difference (95% CI)	P value*
Primary outcome, n (%)
Mortality	102 (54.8)	17 (39.5)	0.36 (0.16 – 0.82)	0.02
Secondary outcomes (days)
Ventilator-free	7.7 (9.9)	11.6 (10.8)	4.0 (7.3 to 0.6)	0.03
ICU-free	7.2 (9.4)	9.1 (9.2)	1.9 (5.0 to −1.2)	0.23
Hospital-free	4.0 (6.3)	5.7 (7.7)	1.6 (4.2 to −0.9)	0.20

^*P value for the primary outcome measure was a Wald test estimated using a logistic regression model accounting for age, cirrhosis, body mass index, mean arterial pressure, lactate, illness severity, sepsis, shock, oxygenation on day of ARDS onset, and intensive care unit tidal volume by time.

^*P values for the secondary outcomes are from the independent sample t-test

CI: confidence interval; ICU: intensive care unit