TABLE 1.
Median ferritin levels and interquartile range (IQR) in first‐time and repeat donors, by sex and age category
| Sex | Age category | First‐time donors | Repeat donors | ||
|---|---|---|---|---|---|
| N | Median ferritin level (IQR) | N | Median ferritin level (IQR) | ||
| Female | 18‐24 | 9713 | 43 (27‐65) | 4537 | 22 (15‐33) |
| Female | 25‐34 | 5071 | 52 (33‐79) | 5045 | 26 (17‐39) |
| Female | 35‐49 | 3801 | 58 (33‐98) | 7411 | 28 (18‐43) |
| Female | 50+ | 1566 | 81 (50‐128) | 11,336 | 35 (23‐53) |
| Male | 18‐24 | 3896 | 96 (66‐135) | 2048 | 28 (18‐43) |
| Male | 25‐34 | 3424 | 136 (95‐191) | 3928 | 34 (21‐53) |
| Male | 35‐49 | 2167 | 154 (102‐224) | 7063 | 35 (22‐56) |
| Male | 50+ | 904 | 173 (120‐256) | 18,050 | 36 (23‐56) |