Table 2.
Prevalence of HBsAg-positive/anti-HBc-reactive and anti-HBc-reactive/HBsAg-negative donations among Brazilian First Time Donors in 2007 by Blood Center and Demographics*
| Number of Donations |
Number of HBsAg plus anti- HBc positive donations |
Prevalence/per 100,000 donations and 95% CI |
Odds Ratios and 95% CI |
Number (%) of anti-HBC only positive donations |
|
|---|---|---|---|---|---|
| Total | 93,710 | 271 | 289 (255-324) | ---- | 3,329 (3.6%) |
| Blood Center | |||||
| Recife | 28,364 | 119 | 419 (344-495) | 1.73 (1.31-2.28) | 1,338 (4.7%) |
| Belo Horizonte | 21,823 | 59 | 270 (201-339) | 1.27 (0.91-1.76) | 753 (3.4%) |
| São Paulo | 43,523 | 93 | 213 (170-257) | 1 | 1,238 (2.8%) |
| Age in Years | |||||
| <25 | 37,309 | 61 | 164 (123-205) | 1 | 583 (1.6%) |
| ≥ 25 <35 | 30,739 | 94 | 306 (244-368) | 1.85 (1.34-2.56) | 955 (3.1%) |
| ≥ 35 < 45 | 16,818 | 83 | 493 (388-599) | 2.91 (2.08-4.06) | 980 (5.8%) |
| ≥ 45 <55 | 7,058 | 26 | 368 (227-510) | 2.25 (1.41-3.57) | 617 (8.7%) |
| ≥ 55 | 1,751 | 6 | 343 (69-616) | 2.07 (0.89-4.80) | 192 (11.0%) |
| Gender | |||||
| Female | 36,396 | 65 | 179 (135-222) | 1 | 1,027 (2.8%) |
| Male | 57,314 | 206 | 359 (310-408) | 1.86 (1.40-2.47) | 2,302 (4.0%) |
| Donation Type | |||||
| Community | 48,769 | 116 | 238 (195-281) | 0.84 (0.65-1.07) | 1,548 (3.2%) |
| Replacement | 44,938 | 155 | 345 (291-399) | 1 | 1,781 (4.0%) |
*
93,710 of the 95,168 first time donations have HBV test results; age and donation type missing for a few donations (hence totals by age and donation type do not add up to 93,710).