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Table 6 Comparison of the mean serum levels of micronutrients in children from different countries

From: Micronutrient levels and nutritional status of school children living in Northwest Ethiopia

Micronutrients Present work Average value (n) Reported range of sera level (n) Country Reference
Magnesium (mg/dl) 2.42±0.32 2.2± 0.4 (488) Mexico [19]
a(1.50-3.68) 1.8±0.17(243) Vietnam [49]
Calcium (mg/dl) 15.31±2.14 9.4±0.97 (5137) India [20]
(9.35-20.52) 8.96±0.48 (39) Nigeria [21]
Iron (μg/dl) 328.19±148.91 60.9±30.2 (281) Malaysia [22]
(74.49-845.51)    
Copper (μg/dl) 191.30±50.17 119.5±34.8 (28) Sudan [23]
(107.94-324.96) 111.27±21.17(114) Yemen [60]
  109±17 (156) Japan [24]
Zinc (μg/dl) 86.40±42.40 65.4±18.9 (247) Uganda [25]
(27.75-211.64) 66.4±21.5 (149) South Africa [55]
  122.3±55 (902) Iran [56]
  92±13 (156) Japan [24]
Selenium (μg/dl) 6.32±2.59 7.21±1.68 (216) Iran [26]
(1.70-12.89)    
Molybdenum(μg/dl) 0.23±0.15 1.75 ± 0.8 USA [65]
(0.03-0.63)    
  1. a -range.