Table 4.

The parameters of the logistic model characterizing the relationship between the variable $Y_1:$ “Have you been infected with COVID-19?”and the variables $X_2$ and $Z_2$ (Model 2). Bold values indicate a statistically significant impact.

Source	Value	SE	${\chi }^{\mathrm{2}}$	$\mathbf{Pr} > {\chi }^{\mathrm{2}}$	OR	Lower CI (95%)	Upper CI (95%)
$a_2$	−0.048	0.623	0.006	0.938
${\beta }_2$	0.025	0.014	3.291	0.070	1.025	0.998	1.053
${\beta }_1$	−2.226	0.424	27.542	<0.0001	0.108	0.047	0.248