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Table 2 Micronutrient status of the study sample by gender and grade level, (N = 1484), 2009

From: Micronutrient status of Palestinian school children following salt and flour fortification: a cross-sectional study

  % with Deficiency
First Grade Sixth Grade Ninth Grade Total
Mean age (SD) in years 6.7 (0.5) 11.8 (0.6) 14.8 (0.6)  
Male Female Male Female Male Female  
MCVa 31.3 16.9 17.1 16.2 14.9 13.5 18.8
Folate
 - (< 3.1 μg/L) 0 0 0 0.4 0 0.4 0.1
 - (< 7.0 μg/L) 0.4 2.4 1.2 1.6 3.8 4.9 2.4
 - (> 20 μg/L) 29.3 33.3 22.4 32.7 18.2 15.5 25.2
Zinc2 34.7 35.7 32.2 33.6 20.0 31.0 31.3
B12
 - Marginal3 26.8 37.3 41.6 37.1 46.6 39.2 40.0
 - Deficient4 15.9 13.5 21.2 27.8 36.0 19.2 22.0
Thyroid hormones
 - Tri-iodothyroxine5 0 0 0 0.8 0.4 0 0.2
 - Thyroxine hormone6 3.7 2.8 6.1 10.9 14.4 12.2 8.2
 - Thyroid- stimulation hormone7 6.1 4.0 2.9 5.2 1.3 2.5 3.6
  1. aMCV<75 fL, 2Zinc < 65 μg/dL, 3B12< 300 pg/mL ,4B12<221 pg/ml, 5FT3 < 2.3 pg/mL, 6FT4 < 0.89 g/dL. 7TSH> 5.5 uIU/mL