Table Ib.
TTI screening results in Austria showing annual averages over the period 2009–2013.
| Agent | N. of tests | N. repeatedly reactive, RR (%) | N. confirmed positive, CP (%) | Positive predictive value PPV % = CP*100/RR |
|---|---|---|---|---|
| HBsAg | 167,289 | 45 (0.027) | 15 (0.0088) | 33% |
| Anti-HCV | 167,289 | 73 (0.043) | 10 (0.0060) | 13.8% |
| Anti-HIV | 167,289 | 82 (0.049) | 3.6 (0.0022) | 4.4% |
|
| ||||
| Total | - | 200 | 28 | 14.2% |
Source: Austrian Red Cross Blood Transfusion Services. TTI: transfusion-transmissible infections; HBsAg: hepatitis B surface antigen; HCV: hepatitis C virus; HIV: human immunodeficiency virus.