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 |