Table 3.

Different algorithms in terms of performance, accuracy, true positive rate, positive predictive rate and true negative rate (%)

		Healthy				COVID-19				Symptomatic
Algorithms	Performance	ACC	TPR	PPV	TNR	ACC	TPR	PPV	TNR	ACC	TPR	PPV	TNR
STFT Rnd	63.31	67.56	63.36	91.96	81.55	80.19	62.86	22.54	81.66	78.86	63.27	38.34	81.67
STFT Opt.	66.85	70.67	66.85	93.07	83.42	82.13	67.24	25.59	83.40	80.89	66.65	42.04	83.45
P-value	2.35e-3	2.8e-4	8.1e-3	2.8e-4	4.0e-3	7.8e-4	4.9e-4	1.5e-5	8.1e-3	1.5e-4	6.1e-3	8.2e-5	1.3e-4
Wavelet Rnd	59.41	64.06	59.28	90.80	79.99	77.99	59.55	19.83	79.55	76.75	59.93	34.80	79.78
Wavelet Opt.	61.89	66.24	61.86	91.50	80.85	79.50	61.63	21.61	81.01	78.04	62.18	36.95	80.90
P-value	3.42e-2	8.3e-3	1.4e-4	7.4e-5	2.2e-3	9.1e-4	3.6e-5	1.2e-3	6.0e-3	5.0e-5	6.7e-4	1.1e-5	3.7e-4
HHT Rnd	59.57	64.21	59.52	90.77	79.84	78.19	60.22	20.13	79.72	76.71	59.42	34.66	79.83
HHT Opt.	61.54	65.94	61.53	91.37	80.64	79.28	61.72	21.41	80.77	77.85	61.46	36.56	80.80
P-value	2.21e-3	2.5e-4	1.3e-3	3.4e-5	2.2e-3	1.2e-4	2.8e-4	1.1e-4	3.9e-5	1.3e-5	2.0e-3	4.0e-4	4.3e-5
MFCC Rnd	58.83	63.55	58.71	90.58	79.66	77.80	59.14	19.59	79.38	76.30	59.21	34.08	79.37
MFCC Opt.	60.53	65.12	60.53	91.14	80.39	78.63	60.07	20.48	80.21	77.29	60.70	35.67	80.28
P-value	4.21e-2	7.6e-4	2.8e-4	4.2e-2	2.2e-2	1.1e-5	1.3e-1	1.0e-4	4.0e-4	3.6e-4	1.0e-2	1.2e-4	8.0e-5