Table I.
Positive rates of HBs-Ag and HCV-Ab tests in blood donations, grouped in different demographic characteristics in Yazd blood transfusion center, 2004-2010
| HBs-Ag | HCV-Ab | |||||
|---|---|---|---|---|---|---|
| Demographic factor | number of positive donations | Prevalence rate in 100,000 donations | 95% CI per 100,000 | number of positive donations | Prevalence rate in 100,000 donations | 95% CI per 100,000 |
| Male | 626 | 256 | 240-281 | 230 | 96 | 83-108 |
| Female | 41 | 402 | 297-558 | 9 | 94 | 33-155 |
| First-time | 568 | 690 | 633-746 | 169 | 205 | 174-236 |
| Lapsed | 59 | 90 | 66-112 | 48 | 72 | 52-93 |
| Regular | 40 | 40 | 27-52 | 22 | 21 | 13-31 |
| Married | 516 | 264 | 242-287 | 180 | 92 | 79-106 |
| Single | 151 | 275 | 231-319 | 59 | 107 | 80-135 |
| <20 years old | 31 | 246 | 159-332 | 5 | 39 | 5-74 |
| 20-29 years old | 132 | 139 | 115-163 | 61 | 64 | 48-80 |
| 30-39 years old | 88 | 122 | 97-148 | 66 | 92 | 70-114 |
| 40-49 years old | 84 | 170 | 133-206 | 25 | 50 | 31-70 |
| ≥50 years old | 41 | 160 | 111-108 | 11 | 43 | 18-68 |
| Illiterate | 18 | 400 | 218-592 | 4 | 90 | 2-178 |
| Secondary school | 92 | 100 | 78-119 | 51 | 55 | 40-70 |
| High school | 428 | 510 | 462-558 | 158 | 188 | 159-218 |
| Diploma | 63 | 100 | 75-125 | 12 | 19 | 8-30 |
| BSc/BA | 63 | 1250 | 940-1551 | 12 | 237 | 103-371 |
| MSc/MA and above | 3 | 60 | 0-134 | 2 | 42 | 0-100 |
| Total | 667 | 267 | 247-287 | 239 | 96 | 83-108 |