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. 2019 Dec 19;10:183–188. doi: 10.2147/PHMT.S225816

Table 2.

Comparison of Means and Standard Deviations (SD) of Variables Before and After Intervention

Variable n Before the Intervention
Mean ± SD
After the Intervention
Mean ± SD
The Paired t-test Results
Hgb (g/dL) 31 11.19 ± 0.38 12.05 ± 50.81 t = 7.58
P = 0.001
Hct (%) 31 34.24 ± 0.41 31.17 ± 2.36 t = 6.19
P = 0.001
Ferritin (µg/L) 31 47.07 ± 21.89 53.98 ± 19.77 t = 2.58
P = 0.001