Jensen 1997.

Methods	Randomised controlled trial. Duration 110 days.
Participants	Adults (n = 87, 42 men and 45 women, separated into >75 years and <75 years) post‐surgery (operable cancer colon/rectum (50), diverticulitis (15), ulcer (5) and other (17)). Nutritional status at inclusion was unclear. 28 dropouts (20 dietary advice group and 8 in no advice group).
Interventions	Dietary counselling to improve nutritional intake and aiming for a protein intake of 1.5 g/kg using oral nutritional supplements if required (n = 40) versus no nutritional advice (n = 47).
Outcomes	Weight *, body composition (DEXA), energy intake*, appetite, fatigue assessments, handgrip strength*, work capacity, respiratory function*, QoL.
Notes	Additional data awaited from authors.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No details of sequence generation reported. Randomisation was stratified.
Allocation concealment (selection bias)	Low risk	Sealed envelopes.
Blinding (performance bias and detection bias) Clinical outcomes	Low risk	The paper states that the surgeon was blinded to intervention group.
Blinding (performance bias and detection bias) Functional outcomes	High risk	Insufficient information in the paper.
Blinding (performance bias and detection bias) Nutritional outcomes	High risk	Assessment not blinded.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	28 dropouts (20 dietary advice group and 8 in no advice group). Reasons for withdrawals not given in paper and not provided by authors on request.
Selective reporting (reporting bias)	Unclear risk	All specified outcomes reported but not in a format usable for meta analysis, energy intake data presented as kcal/kg and weight change data described in text as mean at baseline and end of follow‐up. Additional data on mean change (SD) for weight and energy intake requested from authors but not provided.
Other bias	Unclear risk	Baseline variables given, control group (no advice) were significantly older and heavier than the treatment (advice plus supplements if required) group.