Age groups

(in years)

N

(%)

P

(%)

K

(%)

Mg

(%)

>0 - 4

>4 - 8

>8 - 15

3.46 ± 0.0a

3.18 ± 0.1b

3.03 ± 0.2 b

0.26 ± 0.0a

0.21 ± 0.02b

0.20 ± 0.01b

1.16 ± 0.0a

0.70 ± 0.1b

0.69 ± 0.2b

0.30 ± 0.0a

0.41 ± 0.1a

0.30 ± 0.1a