Estimation of the effect of vaccination in critically ill COVID-19 patients, analysis using propensity score matching

Annals of Intensive Care

Table 2 Comparison of the results of MLR and PSM analysis for ICU mortality

Parameters	MLR AOR 95% CI	p value	PSM AOR 95% C.I	p value
Vaccinated	0.52 (0.29, 0.94)	0.03	0.83 (0.77, 0.91)	< 0.001
Age (in years)	1.02(1.004,1.03)	0.010
Gender	1.05 (0.73, 1.50)	0.80
Diabetes mellitus	1.08 (0.74, 1.56)	0.69
Hypertension	0.94 (0.63, 1.38)	0.78
APACHE II score	1.07 (1.03, 1.10)	< 0.001
Invasive mechanical ventilation	2.91 (1.95, 4.35)	< 0.001
Need for RRT	0.93 (0.52, 1.65)	0.91
ABG pH	0.31 (0.06, 1.67)	0.17
Steroid usage	2.02 (1.14, 3.58)	0.015

MLR, Multivariable logistic regression; PSM, Propensity Score Matching; AOR, Adjusted Odds Ratio; CI, Confidence interval (lower limit and upper limit)