Approaches to data acquisition in IMPPHR
- International multi-center study
- Retrospective analysis of
- 1st variceal hemorrhage, or
- Primary prophylaxis of variceal hemorrhage
- Case acquisition - 7.01.2012 to 6.30.2017
- End of follow up - 6.30.2020
- On-line data entry
- Target 500 to 2000 cases from 50 to 100 centers