- General characteristics of blood donors.
| Characteristics | n | (%) |
|---|---|---|
| Age | ||
| 18-29 | 275 | (53.4) |
| 30-49 | 213 | (41.4) |
| 50-69 | 27 | (5.3) |
| Gender | ||
| Male | 433 | (84.1) |
| Female | 82 | (15.9) |
| City of residence | ||
| Riyadh | 496 | (96.3) |
| Other | 19 | (3.7) |
| Geographical area in Riyadh | ||
| Center | 59 | (11.5) |
| North | 84 | (16.3) |
| South | 55 | (10.7) |
| East | 91 | (17.7) |
| West | 109 | (21.2) |
| Nationality | ||
| Saudi | 436 | (84.7) |
| Non-Saudi | 79 | (15.3) |
| Occupation | ||
| HCW | 71 | (13.8) |
| Non-HCW | 407 | (79.0) |
| Exposure to SARS-CoV-2 | ||
| Yes | 145 | (28.2) |
| No | 370 | (71.8) |
Values are presented as numbers and percentages (%). HCW: healthcare worker