Table 3.

Correlation between DQ or IQ scores and the metabolites biomarkers.

Parameters	Kendall's tau-b's correlation coefficient	Kendall's tau-b's P-value
HCY	−0.455	< 0.001
C3	−0.239	< 0.001
C0	0.213	0.001
C3/C0	−0.301	< 0.001
Methylmalonic acid in urine	−0.609	< 0.001
Methylmalonic acid in serum	−0.462	< 0.001
Methylmalonic acid in serum total exosomes	−0.475	< 0.001
Methylmalonic acid in serum neuro-exosomes	−0.499	< 0.001

HCY, homocysteine; C3, propionylcarnitine; C0, free carnitine; neuro-exosomes, neuronal-derived exosomes.