Table 5. Classification accuracy of PC-DFA based on CARS data (Cross-validation method).

Patient Code	Healthy / disease severity	PC-DFA as Healthy	PC-DFA as Moderate		PC-DFA as Severe
H333	Healthy (10)	7 (70.0%)	0		3 (30.0%)
H418	Healthy (9)	5 (55.6%)	2 (22.2%)		2 (22.2%)
H433	Healthy (8)	5 (62.5%)	1 (12.5%)		2 (12.5%)
H438	Healthy (9)	6 (66.7%)	1 (11.1%)		2 (22.2%)
H345	Moderate (10)	1(10.0%)	9 (90.0%)		0
H368	Moderate (12)	1 (8.3%)	10 (83.3%)		1 (8.3%)
H369	Moderate (10)	0	4 (40.0%)		6 (60.0%)
H378	Moderate (11)	0	10 (90.1%)		1 (9%)
H350	Severe (10)	0	1(10%)		9 (90%)
H373	Severe (12)	0	0		12 (100%)
H409	Severe (11)	0	0		11 (100%)
H415	Severe (10)	2 (20%)	0		8 (80%)
Overall accuracy				78.7%