| Variable |
Gender |
No./total (%) |
Hb (g/dl) mean ± SD. |
Ferritin (ng/ml) mean ± SD. |
| Serum Erythropoietin |
Below-median (low EPO) |
Male |
84/114 (73.7) |
15.8 ± 1.1 |
107.6 ± 78.7 |
| Female |
30/114 (26.3) |
13.5 ± 0.8 |
46.7 ± 37.6 |
| Total |
114/147 (77.5) |
15.2 ± 1.4 |
91.6 ± 75.0 |
| Above-median (high EPO) |
Male |
24/33 (72.7) |
14.9 ± 1.1 |
83.0 ± 59.2 |
| Female |
9/33 (27.3) |
13.9 ± 0.7 |
42.5 ± 22.9 |
| Total |
33/147 (22.5) |
14.6 ± 1.1 |
71.9 ± 54.6 |
| p-value |
|
0.309 |
0.002* |
| Pearson correlation coefficient |
|
|
-1.81* |
Hb: Haemoglobin, EPO: Erythropoietin. *Statistically significant (p=0.002) inverse correlation (r=-1.81) of the serum ferritin with the serum EPO levels. Out of the total donors, 114 (77.5%) donors have below-median serum erythropoietin [mean Hb value 15.2g/dl (SD=1.4)] and ferritin mean value 91.6 ng/ml (SD=75) comparing to 33 (22.5%) donors whom have above-median serum erythropoietin [mean Hb value 14.6 g/dl (SD=1.1)] and ferritin mean value 71.9 |
