Table 3.

Factors associated with neutralizing antibody titers in ICU patients (linear regression).

Characteristics	β Coefficient	p Value
Age	−0.226	0.089
Sex	0.066	0.596
Body Mass Index	0.292	0.031
Delay between admission and serum sampling	0.212	0.095
Delay since symptoms onset	0.169	0.184
Stay length in ICU	−0.01	0.948
Comorbidities	−0.059	0.641
Invasive ventilation	0.031	0.843
Antiviral therapy	−0.048	0.688
Death at 1 month	−0.038	0.761