Table 7 Sex-dependence of copper 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 | 16.6 | 10.2 | 5 | 12.1 | 4.8 | 1.37 | 0.4172 |
5– | 14 | 19.6 | 9.6 | 22 | 13.8 | 4.5 | 1.42 | 0.0194 |
10– | 15 | 23.2 | 9 | 17 | 19.8 | 9.8 | 1.17 | 0.3172 |
15– | 7 | 33.1 | 14 | 9 | 27.9 | 12.7 | 1.19 | 0.4535 |
20– | 19 | 26.7 | 11.5 | 7 | 20.7 | 12.5 | 1.29 | 0.2598 |
30– | 23 | 21.1 | 10.0 | 10 | 22.5 | 10.7 | 0.94 | 0.7198 |
40– | 36 | 24.1 | 12.1 | 16 | 17.5 | 9.5 | 1.38 | 0.0593 |
50– | 17 | 22.5 | 10.0 | 10 | 25.9 | 8.5 | 0.87 | 0.3771 |
60– | 10 | 27.6 | 14.6 | 7 | 21.7 | 10.8 | 1.27 | 0.3792 |
70– | 10 | 21.6 | 16.4 | 16 | 12.5 | 5.6 | 1.72 | 0.0507 |
80– | 15 | 16.6 | 5.4 | 8 | 16.5 | 5.5 | 1.00 | 0.9669 |