. 2019 Mar 16;11(3):646. doi: 10.3390/nu11030646

Table 1.

Plasma concentrations (mean ± SD) of vitamins and metabolic markers in the studied population, stratified according to gender and age.

	Males					Females					p ^ϕ	p ^Ψ
	N	9-Year-Old	N	17-Year-Old	p ¹	N	9-Years-Old	N	17-Year-Old	p ²	p ^ϕ	p ^Ψ
tHcy (µM)	107	3.8 ± 1.8	52	10.2 ± 4.0	<0.001	88	3.8 ± 1.9	67	7.5 ± 2.2	<0.001	0.811	<0.001
Folates (nM)	96	22.9 ± 9.1	39	11.1 ± 3.5	<0.001	80	22.8 ± 9.5	37	12.2 ± 4.7	<0.001	0.969	0.229
tCbl (pM)	104	502.1 ± 163.1	35	286.5 ± 97.2	<0.001	83	530.6 ± 168.2	36	318.0 ± 135.3	<0.001	0.243	0.265
Holo-TC (pM)	99	103.2 ± 28.5	38	69.9 ± 25	<0.001	80	97.4 ± 35.1	37	62.4 ± 24.8	<0.001	0.226	0.196
MMA (µM)	99	0.30 ± 0.31	48	0.21 ± 0.14	0.082	85	0.25 ± 0.19	62	0.18 ± 0.16	<0.001	0.211	0.087

¹ Independent samples T-test between age-groups within males; ² Independent samples T-test between age-groups within females. ϕ Independent samples T-test between 9-yo males and females; Ψ Independent samples T-test between 17-yo males and females. Total Homocysteine (tHcy); total cobalamin (tCbl); holo-transcobalamin (Holo-TC); methylmalonic acid (MMA).