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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)FemaleMaleF/M ratiop-value
NumberAverageS.D.NumberAverageS.D.
0–316.610.2512.14.81.370.4172
5–1419.69.62213.84.51.420.0194
10–1523.291719.89.81.170.3172
15–733.114927.912.71.190.4535
20–1926.711.5720.712.51.290.2598
30–2321.110.01022.510.70.940.7198
40–3624.112.11617.59.51.380.0593
50–1722.510.01025.98.50.870.3771
60–1027.614.6721.710.81.270.3792
70–1021.616.41612.55.61.720.0507
80–1516.65.4816.55.51.000.9669
  1. S.D. indicates standard deviation
  2. F/M ratio is the ratio of the female average calcium concentration to the male average calcium concentration