Statistical parameters Red blood cells Count×1012/L Haemoglobin g/dl
  Group-1 Group-2 Group-1 Group-2
  Before After Before After Before After Before After
Mean 3.81 4.51 3.93 4.42 8.23 10.03 8.85 9.77
Median 3.84 4.52 3.80 4.49 8.300 10.00 8.85 9.95
Mode 3.90 4.46 3.32 3.68 7.70 10.00 9.50 8.80
Range 0.76 0.86 1.57 1.92 1.60 2.00 2.10 2.20
S.D 0.21 0.26 0.49 0.63 0.52 0.64 0.77 0.71
T value 2.97 4.322 19.851 7.735
P value* 0.015 0.001 0.000 0.000
*P<0.05 shows a significant change
Table 1: Comparison of RBCs & Hb levels before and after iron supplementation in different age groups.