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. 2024 Mar 14;14(2):443–460. doi: 10.3390/clinpract14020034

Table 3.

Comparison of blood micronutrient levels among male participants separated into three age categories.

Reference Range for Male Adults * Males (n = 61) Statistics and
p-Values
Total 18–34 Year 35–49 Year 50–64 Year
Potassium (mg/L) 1568–1908 1811 ± 113 1800 ± 86 1839 ± 108 1782 ± 131 F(2, 58) = 1.10, p = 0.340
Calcium (mg/L) 50.3–59.8 53.5 ± 3.4 55.0 ± 2.4 53.1 ± 4.3 52.8 ± 2.4 F(2, 58) = 3.02, p = 0.057
Magnesium (mg/L) 31.2–39.1 34.9 ± 2.8 34.3 ± 2.3 35.1 ± 2.8 35.0 ± 3.1 F(2, 58) = 0.26, p = 0.773
Copper (mg/L) 0.7–0.94 0.79 ± 0.09 0.75 ± 0.09 0.79 ± 0.08 0.82 ± 0.09 F(2, 58) = 3.36, p = 0.042
Iron (mg/L) 465–577 543 ± 34 546 ± 22 542 ± 40 541 ± 33 F(2, 58) = 0.13, p = 0.874
Zinc (mg/L) 5.36–7.29 6.43 ± 0.68 6.12 ± 0.68 6.42 ± 0.62 6.69 ± 0.69 F(2, 58) = 2.23, p = 0.117
Selenium (µg/L) 101–168 136 ± 35 144 ± 61 131 ± 25 137 ± 18 F(2, 58) = 0.93, p = 0.402
Manganese (µg/L) 5.39–11.2 8.29 ± 2.13 8.37 ± 1.64 8.38 ± 2.74 8.13 ± 1.56 F(2, 58) = 0.04, p = 0.958
Molybdenum (µg/L) 0.45–1.56 1.60 ± 4.23 1.33 ± 0.66 2.23 ± 6.45 0.98 ± 0.67 F(2, 58) = 2.24, p = 0.115
Vitamin B6 (µg/L) 16.4–80.4 36.5 ± 22.3 37.2 ± 16.7 41.4 ± 28.6 29.7 ± 14.5 F(2, 58) = 1.88, p = 0.161
Vitamin B9 (ng/mL) >5.38 10.02 ± 4.92 10.95 ± 5.30 9.47 ± 4.53 10.04 ± 5.26 F(2, 58) = 0.29, p = 0.746
Vitamin B12 (pg/mL) 211–911 491 ± 247 567 ± 402 458 ± 120 478 ± 222 F(2, 58) = 0.27, p = 0.767
Vitamin D (nmol/L) 100–150 99.8 ± 49.9 106.1 ± 50.2 98.4 ± 57.1 97.0 ± 40.9 F(2, 58) = 0.21, p = 0.810

* Values are based on reference norms for German-speaking populations [32]. Data are presented as mean (±standard deviation). Statistical test: Kruskal-Wallis (F-values).