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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)FemaleMaleF/M ratiop-value
NumberAverageS.D.NumberAverageS.D.
0–331.12.6533.77.50.920.6757
5–1441.69.12233.69.31.240.2063
10–1553.518.51739.413.51.360.0276
15–782.521.8961.217.71.350.0161
20–1988.033.2756.818.21.550.0279
30–2385.522.11059.99.21.430.0014
40–3692.925.01655.014.61.69<0.0001
50–1775.826.21063.511.91.190.1756
60–10102.923.7764.89.51.590.0012
70–1099.442.81656.823.61.750.0031
80–15108.120.7865.724.71.650.0003
  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