| 2000-2001 | 2002-2003 | 2004-2005 | 2006-2007 | 2008-2009 | p-value of Poisson regression analysis |
---|---|---|---|---|---|---|
HIV | Â | Â | Â | Â | Â | Â |
   No. of seroconvertors | - | - | 17 | 10 | 16 |  |
   Incidence rate per 100,000 person-yr | - | - | 1.99 | 1.31 | 1.83 |  |
   (95% CI)* |  |  | (0~8.30) | (0~6.51) | (0~7.81) |  |
   Residual risk (per 100,000 donations) | - | - | 0.09 | 0.04 | 0.06 | p = 0.745 |
   (95% CI) |  |  | (0~1.43) | (0~0.95) | (0~1.14) |  |
   RR (1 in) | - | - | 1,080,244 | 2,534,406 | 1,813,998 |  |
HCV | Â | Â | Â | Â | Â | Â |
   No. of seroconvertors | 64 | 31 | 23 | 14 | 7 |  |
   Incidence rate per 100,000 person-yr | 6.80 | 3.19 | 2.69 | 1.83 | 0.80 |  |
   (95% CI) | (0~18.34) | (0~11.00) | (0~10.02) | (0~7.97) | (0~4.76) |  |
   Residual risk (per 100,000 donations) | 1.23 | 0.58 | 0.28 | 0.05 | 0.02 | p = 0.001 |
   (95% CI) | (0~6.14) | (0~3.91) | (0~2.65) | (0~1.07) | (0~0.65) |  |
   RR (1 in) | 81,431 | 173,611 | 357,197 | 1,991,405 | 4,560,879 |  |
HBV | Â | Â | Â | Â | Â | Â |
   No. of seroconvertors | 126 | 121 | 105 | 175 | 105 |  |
   Incidence rate per 100,000 person-yr | 13.48 | 12.49 | 12.30 | 22.87 | 11.96 |  |
   (95% CI) | (0~29.73) | (0~27.95) | (0~27.98) | (1.16~44.58) | (0~27.25) |  |
   Residual risk (per 100,000 donations) | 2.18 | 2.20 | 1.99 | 3.48 | 1.47 | p = 0.885 |
   (95% CI) | (0~8.72) | 0~8.69) | (0~8.30) | (0~11.95) | (0~6.83) |  |
   RR (1 in) | 45,891 | 49,515 | 50,218 | 28,754 | 67,826 |  |