Table 5.

Average values and standard deviations for the selected feature variables and results of the Wilcoxon rank sum test.

Features	Mean ± SD		Wilcoxon rank sum test	p
	Control (μmol/L)	PKU (μmol/L)
	(n = 207)	n = 49
Met/Phe	0.29 ± 0.45	0.055 ± 0.054	9,283	<2.2e-16
Phe	216.01 ± 231.96	898.58 ± 696.91	1,127	<2.2e-16
Tyr	164.18 ± 179.43	66.87 ± 26.16	8,150	4.001e-11