Table 1.

Results of statistical analyses using three different approaches and putative identification of the selected variables in case of the RH study.

Variables	OPLS-DA without a priori variable selection		OPLS-DA with a priori variable selection		LASSO
	Pareto scaling	UV scaling	Pareto scaling	UV scaling
Selected variables	46	218	4	19	14
Found in databases	35	120	3	10	11
Involved in biochemical pathways	20	54	2	7	6