Table 3.

Accuracy results with the COVID-$19^{-}$ cases gathered from the Chinese paediatric repository available in [28]. LB stands for label balancing, with usual weight correction for the supervised model, and the proposed PBC for the MixMatch model.

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	0.882	0.077	0.868	0.080	0.925	0.039
	70%	30%	Yes	0.812	0.050	0.815	0.089	0.883	0.048
			No	0.823	0.048	0.815	0.087	0.868	0.064
	80%	20%	Yes	0.857	0.107	0.898	0.052	0.930	0.053
			No	0.823	0.125	0.872	0.066	0.930	0.037
Yes	50%	50%	NA	0.945	0.036	0.950	0.026	0.963	0.028
	70%	30%	Yes	0.925	0.042	0.930	0.053	0.943	0.034
			No	0.902	0.058	0.898	0.091	0.915	0.044
	80%	20%	Yes	0.947	0.037	0.957	0.022	0.962	0.028
			No	0.847	0.122	0.857	0.141	0.895	0.042