Table 4.

Accuracy results with the COVID-$19^{-}$ cases gathered from the ChestX-ray8 repository available in [41]. LB stands for the label balancing usage (PBC in the case of SSDL).

SSDL	COVID-$19^{-}$	COVID-$19^{+}$	LB	$n_l=10$		$n_l=15$		$n_l=20$
				$\overline{x}$	$s$	$\overline{x}$	$s$	$\overline{x}$	$s$
No	50%	50%	NA	0.756	0.062	0.727	0.062	0.756	0.050
	70%	30%	Yes	0.732	0.039	0.723	0.043	0.752	0.038
			No	0.739	0.051	0.744	0.053	0.773	0.049
	80%	20%	Yes	0.729	0.051	0.721	0.054	0.768	0.047
			No	0.735	0.052	0.739	0.070	0.777	0.050
Yes	50%	50%	NA	0.803	0.059	0.814	0.052	0.840	0.038
	70%	30%	Yes	0.816	0.048	0.815	0.038	0.839	0.049
			No	0.782	0.054	0.760	0.068	0.782	0.051
	80%	20%	Yes	0.798	0.050	0.818	0.044	0.824	0.039
			No	0.735	0.056	0.740	0.075	0.752	0.048