Table 2.

Factors associated with hospital mortality on stepwise multivariate logistic regression analysis, considering patients from the first and the third wave altogether.

	Odds ratio	95% Confidence interval	p
Age, years	1.061	1.036–1.087	<0.001
Chronic illnesses, number	1.348	1.168–1.555	<0.001
Duration of symptoms, days	0.939	0.889–0.992	0.025
P/F ratio, mmHg	0.991	0.988–0.994	<0.001
Chest CT visual score, %	1.022	1.009–1.036	<0.001
PCT classes, for each incremental class	1.842	1.300–2.610	<0.001

Other variables considered in the model: sex (F vs M), period of admission (third wave vs first wave), fever, cough, dyspnea, fatigue, diarrhea, obesity, diabetes, hypertension, chronic kidney disease, chronic heart disease, cancer, systolic and diastolic blood pressure, hemoglobin, neutrophil count, lymphocyte count, creatinine, C-reactive protein. p values < 0.05 are indicated in bold.

P/F=PaO₂/FiO₂; CT = computed tomography; PCT = procalcitonin.