Table 2.

Logistic regression analysis of factors associated with mortality, at hospital admission and during the complete clinical course.

Predictor	Exp (B)	95 % upper CI for Exp (B)	95 % lower CI for Exp (B)
Forward selection logistic regression analysis of factors predicting mortality at hospital admission*
Age (per year)	1.077	1.025	1.132
Gender (Female vs male)	0.434	0.258	0.730
Previous treatment with RAAS inhibitors (yes/no)	0.589	0.362	0.961
Symptoms duration (per day)	0.921	0.864	0.983
Oxygen saturation at admission (per 1 %)	0.929	0.888	0.972
Heart rate (per beat)	1.025	1.010	1.040
CRP levels (per mg/dL)	1.007	1.003	1.010
Platelet count (per x106, per L)	0.995	0.991	0.998
Forward selection logistic regression analysis of all factors predicting mortality**
Age (per year)	1.086	1.015	1.161
Gender (Female vs male)	0.271	0.128	0.575
Previous treatment with RAAS inhibitors (yes/no)	0.459	0.222	0.949
Oxygen saturation at admission (per 1 %)	0.901	0.842	0.963
Heart rate (per beat)	1.040	1.018	1.061
Platelet count (per x106, per L)	0.995	0.991	0.999
Worsening dyspnea during hospitalization (yes/no)	73.616	30.642	176.857
Decline in renal function during hospitalization (yes/no)	7.270	2.586	20.441

Results are for 370 patients with a complete set of variables.

^*Variables included in the model were age, gender, Charlson Comorbidity Index, previous treatment with RAAS inhibitors, duration of symptoms before admission, presence of fever, heart rate, oxygen saturation at admission, lymphocyte count, neutrophil count, platelet count, and blood concentration of ALT, CRP and creatinine.

^**Variables included in the model were the same as before plus worsening dyspnea, decline renal function and hypotension during hospitalization.