- Healthy Yemeni participant’s gender, age, ABO phenotype, Rh groups, and secretor status.
| Variables | n (%) |
|---|---|
| Gender | |
| Male | 140 (65.1) |
| Female | 75 (34.9) |
| Age (years) | |
| 10-20 | 47 (21.9) |
| 21-30 | 116 (53.9) |
| 31-40 | 35 (16.3) |
| 41-60 | 17 (7.9) |
| ABO blood group | |
| A | 76 (35.4) |
| B | 42 (19.5) |
| AB | 26 (12.1) |
| O | 71 (33.0) |
| Rh blood group | |
| D positive | 174 (81.9) |
| D negative | 41 (19.1) |
| Secretor state | |
| Secretor | 168 (78.1) |
| Non-secretor | 47 (21.9) |
Values are presented as numbers and percentages (%).