| Study | Reason for exclusion |
|---|---|
| Aanpreung 1998 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Abe 2004 | Wrong study population |
| Al‐Quorain 1994 | The review does not deal with comparing different drugs in the same class (H2 blocker antagonists) |
| Alaniz 2014 | Wrong study design |
| Anonymous 2013 | Wrong study design |
| Anonymous 2015 | Wrong study design |
| Arora 1991 | Wrong study population |
| Baccino 1987 | Wrong study population |
| Baghaie 1995 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Barth 1984 | The review does not deal with comparing different drugs in the same class (H2 blocker antagonists) |
| Bauer 1977 | Wrong study design |
| Bergmans 2001 | Wrong indication |
| Bhatt 2010 | Wrong setting, no ICU setting |
| Cheadle 1985 | Wrong setting |
| Chernov 1971 | Wrong study design |
| Cloud 1994 | Wrong indication/study aim (prevention of gastritis) (conference abstract) |
| Critchlow 1987 | Wrong study design |
| Dabiri 2015 | The review does not deal with comparing different drugs in the same class (proton pump inhibitors) |
| Driscoll 1993 | Wrong intervention and comparison |
| Duma 1986 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Estruch 1991 | Wrong population |
| Fiorucci 1989 | Wrong study design |
| Forestier 2008 | Wrong intervention and study aim |
| Friedl 1985 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Geus 1993 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Hauer 1996 | Wrong study design |
| Heiselman 1995 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Herrmann 1979 | Wrong study design |
| Hollander 1973 | Wrong population |
| Huang 2017 | Wrong setting |
| Kalfarentzos 1997 | The review does not deal with comparing different drugs in the same class (nutrition regimen) |
| Karlstadt 1993 | Wrong population |
| Ketterl 1984 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Khan 1981 | Wrong study design |
| Klarin 2008 | Wrong intervention and comparison |
| Krag 2015 | Wrong study design |
| Krier 1990 | Wrong study design |
| Krueger 2002 | Wrong intervention and comparison |
| Kuusela 1998 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Laterre 2001 | The review does not deal with comparing different drugs in the same class (proton pump inhibitors) |
| Levine 1994 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Liu 2013 | Wrong study population |
| Madani 2014 | Wrong indication/study aim (prevention of gastritis) |
| McAlhany 1976 | Wrong study population |
| McElwee 1979 | Wrong study population |
| Metz 2010 | Wrong study design |
| Misra 2005 | Wrong study population |
| Mojtahedzadeh 2002 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| More 1985 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Mulla 2001 | Wrong population (patients on continuous venovenous hemofiltration) |
| Olsen 1995 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonists) |
| Olsen 2008 | The review does not deal with comparing different drugs in the same class (proton pump inhibitor) |
| Osteyee 1994 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Pelfrene 1996 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Phillips 2001 | The review does not deal with comparing different drugs in the same class (nutrition regimen) |
| Reid 1986 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Ren 2015 | Wrong indication (management of gastrointestinal bleeding) |
| Schentag 1989 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Simon 1984 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Solana 2013 | The review does not deal with comparing different drugs in the same class (omeprazole) |
| Sung 2003 | Wrong study design |
| Taha 1996 | Wrong study population |
| Tofil 2008 | Wrong study design |
| Toyota 1998 | Wrong study population |
| Udd 2005 | The review does not deal with comparing different drugs in the same class (omeprazole) |
| Vaduganathan 2016 | Wrong setting |
| Vargas 1993 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Wang 1995 | The review does not deal with comparing different drugs in the same class (H2 receptor antagonist) |
| Yao 2015 | Wrong setting, no ICU setting |
| Zhou 2002 | Wrong study population |
ICU: intensive care unit.