- Characteristics of subjects within this study.
| Demographic characteristics of subjects | ||
|---|---|---|
| Demographic characteristics | n | (%) |
| Age | ||
| ≤ 20 years old | 249 | 6.0 |
| 21-30 years old | 1663 | 40.3 |
| 31-40 years old | 1418 | 34.4 |
| 41-50years old | 613 | 14.8 |
| 51-60 years old | 166 | 4.0 |
| 61-70 years old | 11 | 0.3 |
| Gender | ||
| Male | 4067 | 98.7 |
| Female | 53 | 1.3 |
| Nationality | ||
| Saudi | 2922 | 70.9 |
| Non-Saudi | 1198 | 29.1 |
| Total | n= 4120 | 100 % |
| Prevalence of serological markers of TTI among study subjects | ||
| Serological Marker | ||
| HBsAg | 29 | 0.70 |
| Anti-HBc | 366 | 8.88 |
| Anti-HCV | 23 | 0.56 |
| Anti-HIV-I/II p24 | 4 | 0.10 |
| Anti-HTLV-I/II | 16 | 0.39 |
| RPR | 11 | 0.27 |
| Prevalence of multiple markers of TTI among seropositive samples | ||
| Co-infection pattern | ||
| Anti-HBc + Anti-HCV | 3 | 0.07 |
| Anti-HBc + Anti-HTLV-I/II | 3 | 0.07 |
| Anti-HBc + RPR | 5 | 0.12 |
| Anti-HCV + Anti-HIV-I/II p24 | 1 | 0.02 |
| Positivity rate of all conventional TTI markers with respectiveABO/Rh blood groups* | ||
| ABO/Rh | Seropositive samples, n (%) | |
| AB+ | 107 (2.6) | 18 (16.8) |
| A+ | 1105 (26.8) | 122 (11.0) |
| B+ | 409 (9.9) | 39 (9.5) |
| O+ | 2063 (50.1) | 239 (11.6) |
| AB- | 10 (0.2) | 1 (10.0) |
| A- | 120 (2.9) | 12 (10.0) |
| B- | 37 (0.9) | 1 (2.7) |
| O- | 269 (6.5) | 16 (5.9) |
| Total | 4120 (100) | 448 (10.9) |
TTI: transfusion transmissible infection, HBsAg: hepatitis B surface antigen, Anti-HBc: anti-hepatitis B core, Anti-HCV: anti-hepatitis C virus, Anti-HIV-I/II: anti-human immunodeficiency viruses 1 and 2, Anti-HTLV-I/II: anti-human T-lymphotropic viruses types 1 and 2, RPR rapid plasma reagin test for syphilis antigen.
↵* One sample positive for a TTI marker (anti-HTLV-I/II) did not have the blood group record and was thus excluded from the analysis of TTI markers based on blood groups.