Table 5 Sex-dependence of magnesium concentration in human hair (μg/g hair)
From: Age- and sex-dependence of five major elements in the development of human scalp hair
Age (years) | Female | Male | F/M ratio | p-value | ||||
|---|---|---|---|---|---|---|---|---|
Number | Average | S.D. | Number | Average | S.D. | |||
0– | 3 | 31.1 | 2.6 | 5 | 33.7 | 7.5 | 0.92 | 0.6757 |
5– | 14 | 41.6 | 9.1 | 22 | 33.6 | 9.3 | 1.24 | 0.2063 |
10– | 15 | 53.5 | 18.5 | 17 | 39.4 | 13.5 | 1.36 | 0.0276 |
15– | 7 | 82.5 | 21.8 | 9 | 61.2 | 17.7 | 1.35 | 0.0161 |
20– | 19 | 88.0 | 33.2 | 7 | 56.8 | 18.2 | 1.55 | 0.0279 |
30– | 23 | 85.5 | 22.1 | 10 | 59.9 | 9.2 | 1.43 | 0.0014 |
40– | 36 | 92.9 | 25.0 | 16 | 55.0 | 14.6 | 1.69 | <0.0001 |
50– | 17 | 75.8 | 26.2 | 10 | 63.5 | 11.9 | 1.19 | 0.1756 |
60– | 10 | 102.9 | 23.7 | 7 | 64.8 | 9.5 | 1.59 | 0.0012 |
70– | 10 | 99.4 | 42.8 | 16 | 56.8 | 23.6 | 1.75 | 0.0031 |
80– | 15 | 108.1 | 20.7 | 8 | 65.7 | 24.7 | 1.65 | 0.0003 |