Table 2. Confusion matrix analysis of partial least square-discriminant analysis to differentiate beef sausage, dog meat sausage, and beef sausage adulterated with dog meat

Class	Sample	Members	Correct (%)	1	2	3	4	5	6	7	8	9	10	No class (YPred≤0)
1	BS	3	100	3	0	0	0	0	0	0	0	0	0	0
2	0.1DS	3	100	0	3	0	0	0	0	0	0	0	0	0
3	1DS	3	100	0	0	3	0	0	0	0	0	0	0	0
4	5DS	3	100	0	0	0	3	0	0	0	0	0	0	0
5	10DS	3	100	0	0	0	0	3	0	0	0	0	0	0
6	25DS	3	100	0	0	0	0	0	3	0	0	0	0	0
7	50DS	3	100	0	0	0	0	0	0	3	0	0	0	0
8	75DS	3	100	0	0	0	0	0	0	0	3	0	0	0
9	100DS	3	100	0	0	0	0	0	0	0	0	3	0	0
10	QC	6	100	0	0	0	0	0	0	0	0	0	6	0
Total		33	100	3	3	3	3	3	3	3	3	3	6	0

0.1DS, beef sausages adulterated with 0.1% DS; 5DS, beef sausages adulterated with 1% DS; 1DS, beef sausages adulterated with 5% DS; 10DS, beef sausages adulterated with 10% DS; 25DS, beef sausages adulterated with 25% DS; 50DS, beef sausages adulterated with 50% DS; 75DS, beef sausages adulterated with 75% DS; 100DS, sausages with 100% dog meat.
BS, beef sausages; DS, dog meat sausage; QC, quality control samples.