- Personal characteristics of study participants.
| Personal data | n (%) |
|---|---|
| Age in years, mean±SD (range) | 33.5±9.1 (18-65) |
| Gender | |
| Male | 10,021 (99.3) |
| Female | 74 (0.7) |
| ABO | |
| A | 3311 (32.8) |
| B | 967 (9.6) |
| AB | 264 (2.6) |
| O | 5553 (55.0) |
| Rh | |
| Negative | 998 (9.9) |
| Positive | 9097 (90.1) |
| Kell | |
| Negative | 946 (92.2) |
| Positive | 80 (7.8) |
Values are presented as numbers and precentages (%) or mean ± standard deviation (SD).