Table 1

Data retrieval of studies

Original studyCenter
Inclusion periodProbandsRelativesReference no.
GroningenAmsterdamMaastricht
Antithrombin/protein C/protein S deficiency Yes No No April 1999–July 2004 Consecutive patients with venous thrombosis First-degree relatives, and second degree relatives of antithrombin deficient probands as well 1,12  
Prothrombin 20210G>A Yes Yes Yes May 1998–July 2004 Consecutive patients with venous thrombosis, or premature atherosclerosis First-degree relatives 3  
High factor VIII Yes Yes Yes May 1998–July 2004  First-degree relatives 5  
Hyperhomocysteinemia Yes Yes Yes May 1998–July 2004  First-degree relatives 13  
Factor V Leiden Yes Yes Yes May 1995–July 1998 Consecutive patients with venous thrombosis First-degree relatives 2,14  
Original studyCenter
Inclusion periodProbandsRelativesReference no.
GroningenAmsterdamMaastricht
Antithrombin/protein C/protein S deficiency Yes No No April 1999–July 2004 Consecutive patients with venous thrombosis First-degree relatives, and second degree relatives of antithrombin deficient probands as well 1,12  
Prothrombin 20210G>A Yes Yes Yes May 1998–July 2004 Consecutive patients with venous thrombosis, or premature atherosclerosis First-degree relatives 3  
High factor VIII Yes Yes Yes May 1998–July 2004  First-degree relatives 5  
Hyperhomocysteinemia Yes Yes Yes May 1998–July 2004  First-degree relatives 13  
Factor V Leiden Yes Yes Yes May 1995–July 1998 Consecutive patients with venous thrombosis First-degree relatives 2,14