Explanation of variable:
IF AVAILABLE, type of ASSAY used for this measurement
| 1 | Roche qualitative (Amplicor) [HCV and HBV] |
| 2 | Roche quantitative test for HBV (Cobas Amplicor HBV monitor) |
| 3 | Bayer Bdna quantitative [HCV] |
| 4 | Bayer Bdna quantitative [HBV] |
| 5 | Roche Taqman |
| 6 | Abbott Real Time [HCV and HBV] |
| 7 | Siemens VERSANT [HCV and HBV] DNA (bNA) |
| 8 | Quiagen artus [HCV and HBV] PCR kit |
| 9 | Other |