Study	Reason for exclusion
Beau 1995	Examined the techniques for enteral nutrition, was not an RCT
Gottschlich 1996	Not an RCT
Kalfarentzos 1987	Not an RCT
Kalliafas 1996	Determined whether administration of erythromycin could facilitate passage of a nasoenteric feeding tube to the duodenum for post‐pyloric feeding
Keshavarzian 1993	Not an RCT, was a crossover study
Kirby 1995	Not an RCT
Levenson 1986	Compared the frequency of duodenal intubations using weighted and un‐weighted nasoenteric feeding tubes
Levy 1988	Not an RCT
Lord 1992	Compared passage of weighted versus un‐weighted enteral feeding tubes.
Marian 1993	Not an RCT, was a prospective study.
Schmieding 1997	Not an RCT
Schulz 1993	Not an RCT, was a prospective study
Stern 1994	Determined whether erythromycin ethylsuccinate elixir would facilitate the post‐pyloric passage
Thurlow 1985	Not an RCT
Ugo 1992	Not an RCT

Abbreviation

RCT: randomised controlled trial