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Cutoff levels used to determine low, middle and high categories for each element by sex.
| Men (n = 794) | Women (n = 681) | |||||
|---|---|---|---|---|---|---|
| Cutoff Level | Selenium (µg/L) |
Zinc (µg/L) |
Copper (µg/L) |
Selenium (µg/L) |
Zinc (µg/L) |
Copper (µg/L) |
| 25 percentile | 56 | 636 | 944 | 71 | 727 | 1011 |
| 75 percentile | 78 | 850 | 1230 | 93 | 899 | 1260 |
