Table 8.

Baseline univariate and multivariate predictors of mortality in patients with a PaO2/FiO2 ratio < 100 mmHg and ≥ 100 mmHg.

	HR (95% CI)	p value	HR (95% CI)	p value
PaO2/FiO2 ratio ≥ 100 mmHg
Age	1.05 (1-1.1)	0.038	1.05 (0.98-1.13)	0.16
Sex (F)	0.56 (0.23-1.39)	0.21
HBP	2.32 (0.99-5.48)	0.07	1.84 (0.35-9.67)	0.47
CAD	1.73 (0.5-5.96)	0.39
LAD	1.001 (1-1.003)	0.14
CRP	1.006 (1-1.01)	0.04	1.004 (0.99-1.01)	0.22
IL-6	1 (1-1)	0.14
Ferritin	1 (1-1)	0.008	1 (1-1)	0.01
Treatment with biologics	0.1 (0.02-0.42)	0.002	0.09 (0.02-0.51)	0.006
PaO2/FiO2 ratio < 100 mmHg
Age	1.05 (1.02-1.09)	0.004	1.054 (1.02-1.09)	0.003
Sex (F)	0.7 (0.36-1.35)	0.29
HBP	1.21 (0.63-2.3)	0.57
CAD	2.37 (1.15-4.91)	0.02	1.63 (0.77-3.45)	0.2
LAD	1.002 (1-1.003)	0.02	1.002 (1-1.003)	0.013
CRP	1.001 (0.99-1.01)	0.57
IL-6	1 (1-1)	0.37
Ferritin	1 (1-1)	0.39
Treatment with biologics	0.55 (0.28-1.04)	0.07	0.66 (0.33-1.33)	0.24

Results are reported as hazard ratio and 95% confidence interval; statistically significant p value < 0.05. HBP, high blood pressure; CAD, coronary artery disease; LAD, lactate dehydrogenase; CRP, C-reactive protein; IL-6, interleukin-6; HR, hazard ratio; CI, confidence interval.

Bold values indicate that the p values are statistically significant.