| Factors studied | Total workforce | Number of cases | Prevalence in% |
| Age |
|
|
|
| ≤18 years | 3 | 2 | 66.7 |
| 19 - 45 years | 1300 | 89 | 6.9 |
| ≥46 years | 118 | 6 | 5.1 |
| Sex |
|
|
|
| Female | 302 | 19 | 6.3 |
| Male | 1119 | 78 | 7.0 |
| Civil status |
|
|
|
| Single | 269 | 36 | 13.4 |
| Married | 1152 | 61 | 5.3 |
| Categories donor |
|
|
|
| Volunteer | 230 | 11 | 4.8 |
| Family | 975 | 67 | 6.9 |
| Paid | 216 | 19 | 8.8 |
| Blood group |
|
|
|
| A | 341 | 29 | 8.5 |
| AB | 46 | 2 | 4.4 |
| B | 199 | 14 | 7.0 |
| O | 835 | 52 | 6.2 |
| Rhesus |
|
|
|
| Negative | 10 | 0 | 0.0 |
| Positive | 1411 | 97 | 6.9 |