Table 1.

Summary of the four DT models combined for developing the DF model (n = number of misclassifications).

	DT model 1 (n = 12)	DT model 2 (n = 13)	DT model 3 (n = 14)	DT model 4 (n = 14)
Variables (m/z peaks) used in each DT model	9,656	8,067	6,542	7,692
	8,446	8,356	7,934	6,756
	5,074	5,457	7,195	9,593
	6,797	2,144	4,497	9,456
	8,291	7,885	4,080	5,978
	9,720	7,024	6,199	3,780
	3,486	7,771	7,481	2,794
	4,191	3,897	5,586	7,844
	4,653	4,757	6,099	5,113
		6,890	7,070	28,143
		2,014	24,400	2,982
		9,149	2,887	6,443
			7,054	7,820
			4,475	4,580
			4,537
			7,409
			7,054