Table I.
Demographics of donors and characteristics of double-erythrocyte (2RBC) donations by apheresis in the period from 1st January 2003 to 31st May 2015.
| Donor characteristics | N. |
|---|---|
| All donors with >1 2RBCa | 861 |
| Included in the analysisb | 793 |
| Gender (m/f) | 779/14 |
| Age at first 2RBC, years (mean [SD]) | 44 (21) |
| Age at last 2RBC, years (mean [SD]) | 48 (22) |
|
| |
| 2RBC collections | N. |
|
| |
| All 2RBC collectionsa | 4,858 |
| Included in the analysisb | 4,377 |
| Purpose of donation: | |
| - allogeneic transfusion | 4,350 (99%) |
| - autologous transfusion | 22 |
| - otherc | 5 |
| Collections per donor, n. median (interquartile range) | 4 (8) |
a
Including carriers of hereditary haemochromatosis donating according to individually adapted frequency and eligibility criteria.
b
Data on demographics and collections refer to subjects donating according to standard procedures (excluding carriers of hereditary haemochromatosis).
c
Laboratory use and validation of the apheresis device in donors temporarily not eligible for blood donation.
SD: standard deviation.