Table 2.

shows the number of chromatograms from each group (IBS/IBD/controls) that were included in each of the training and validation sets of the four datasets used to train and validate each of the different ANNs.

			Training set			Validation set
	Dataset	Controls	IBS	IBD	Subtotal	Controls	IBS	IBD	Subtotal
IBS Vs IBD	1		25	34	59		9	11	20
	2		25	34	59		9	11	20
	3		26	34	59		8	11	19
	4		26	33	59		8	12	20
IBS Vs Controls	1	34	26		60	12	8		20
	2	34	26		60	12	8		20
	3	34	26		60	11	9		20
	4	35	26		61	11	9		20
IBD Vs Controls	1	34		34	68	12		11	23
	2	34		34	68	12		11	23
	3	35		34	69	11		11	22
	4	35		33	68	11		12	23