Study	Reason for exclusion
Bao 2006	Interventions out of area of interest: comparing enteral nutrition (EN) group and total parenteral nutrition (TPN) group in severe acute pancreatitis
Eatock 2005	Participants were not receiving treatment in critical care setting
Graham 1989	Participants were not randomly assigned
Heyland 2001	Not measuring any relevant outcomes
Kumar 2006	Participants were not receiving treatment in critical care setting
Lin 2006	Retrospective review
Minard 2000	Interventions out of area of interest: Study examined the effects of early vs delayed enteral feeding on outcomes in participants with severe head injury
Nayak 2008	Interventions out of area of interest: Study was comparing time taken for insertion of nasoduodenal tube with metoclopramide or cisapride
Olah 1996	Interventions out of area of interest: Study was comparing jejunal vs parenteral feeding Feeding in treatment of acute pancreatitis
Singh 2012	Irrelevant outcomes; only outcome relevant to our review was total length of hospital stay, but no standard deviations were reported for this outcome Pneumonia was not an outcome; investigators reported positive tracheal aspirate without correlating it with radiological findings or the clinical picture
Spain 1995	Retrospective study
Strong 1992	Participants were not receiving treatment in a critical care setting
Taylor 1998	Observational study
Taylor 1999	Interventions out of area of interest: Study was comparing aggressive enteral feeding vs standard enteral feeding, and as part of feeding protocol, participants in intervention group could require a post‐pyloric tube to achieve feeding target
Treux 1995	Interventions out of area of interest: Study was comparing continued enteral feeding vs intermittent bolus delivery

EN = enteral nutrition.

TPN = total parenteral nutrition.