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Table 4 Comparison between mean values of different hematological parameters and serum level of ferritin in anemic and control groups.

From: Relation between anemia and blood levels of lead, copper, zinc and iron among children

  Anemic group
(n = 30)
Mean ± SD
Non-anemic control
(n = 30)
Mean ± SD
Test of significance
RBC (×106 mm3) 4.05 ± 0.51 4.24 ± 0.28 t = -1.7
p = 0.08
Hb (g/dl) 8.97 ± 0.88 12.13 ± 0.46** t = -17.2
p = 0.00
Hct 28.59 ± 2.26 36.56 ± 2.01** t = -14.5
p = 0.00
MCV(μ3) 70.02 ± 14.80 81.48 ± 6.70** t = -3.8
p = 0.00
MCH 21.74 ± 3.21 27.08 ± 1.23** t = -8.5
p = 0.00
MCHC 31.38 ± 1.98 33.54 ± 1.91** t = -4.2
p = 0.00
RDW 17.27 ± 2.66 13.24 ± 0.60** t = 8.0
p = 0.00
Ferritin (ng/ml) 40.21 ± 23.46 82.28 ± 9.76** t = -9.0
p = 0.00
  1. ** p = 0.00
  2. t = t-test