Table 1. Database for this study.
| Recruitment years | Generation | Study | Stage | Reference |
| 1988–1994 | G2 | HD4 | early | (3) Dühmke E; JCO 2001 |
| HD5 | intermediate | (4) Sieber M; JCO 2002 | ||
| HD6 | advanced | (5) Sieber M; Ann Oncol 2004 | ||
| 1994–1998 | G3 | HD7 | early | (6) Engert A; JCO 2007 |
| HD8 | intermediate | (7) Engert A; JCO 2003 | ||
| HD9 | advanced | (8) Diehl V; NEJM 2003 | ||
| 1998–2002 | G4 | HD10 | early | (9) Engert A, NEJM 2010 |
| HD11 | intermediate | (10) Eich HT; JCO 2010 | ||
| HD12 | advanced | (11) Borchmann P; JCO 2011 |
Database of 9150 patients with a new diagnosis of Hodgkin’s lymphoma who were treated in three generations of prospective, randiomized clinical trials of theGerman Hodgkin Study Group. GHSG, German Hodgkin Study Group; HD, Hodgkin’s disease; G2, 2 nd trial generation; G3, 3 rd trial generation; G4, 4 th trial generation; Ann Oncol, Annals of Oncology; JCO, Journal of Clinical Oncology; NEJM, New England Journal of Medicine