Page 2002.

Methods	Randomised clinical trial, UK
Participants	40 hospitalised adults undergoing oesophageal resection for carcinoma, at nutritional risk due to major surgery Male:Female = 28:12 Mean age = 67.3 years
Interventions	Experimental group: Isocaloric enteral feed (1048 kcal/l and 40 g protein/l)(n = 20) Control group: Standard intravenous fluids (5% glucose)(n = 20)
Outcomes	Weight, BMI, haematological and serological parameters, days in hospital, duration of enteral feed, death, complications
Study dates	Not stated
Notes	We contacted the authors on 23rd June 2015 by email: richard.page@ccl‐tr.nwest.nhs.uk. We received no reply.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	The trial was described as being randomised, but it was unclear how the sequence was generated.
Allocation concealment (selection bias)	Low risk	The trial used sealed envelopes.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not described
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not described
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	The number of participants with incomplete data was not reported.
Selective reporting (reporting bias)	Low risk	The trial reported serious adverse events and all‐cause mortality.
For‐profit bias	Unclear risk	It was unclear how the trial was funded.
Other bias	Low risk	The trial appeared to be free of other components that could put it at risk of bias.