Campbell 2008.

Methods	Randomised controlled trial. Duration 12 weeks.
Participants	Adults (n = 62) with stage 4 chronic kidney disease, 56 started study, male n = 34, female n = 22, intervention group mean age 69.5 (SD 11.7) years; control mean age 70.9 (SD 11.6) years. Nutritional status assessed using SGA, intervention group 24% malnourished (SGA B), control group 11% malnourished (SGA B). 50 patients completed the study.
Interventions	Dietary counselling to increase energy intake, maintain protein intake and information on appropriate nutritional choices for renal patients (n = 24) versus usual care (generic information on nutrition, n = 26).
Outcomes	Dietary intake*, body weight*, nutritional status (SGA), body composition (total body potassium), survival * biochemistry.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated number sequence.
Allocation concealment (selection bias)	Low risk	Described as concealed to recruiting officer until after baseline assessment.
Blinding (performance bias and detection bias) Clinical outcomes	Unclear risk	Not stated.
Blinding (performance bias and detection bias) Functional outcomes	Unclear risk	Not stated.
Blinding (performance bias and detection bias) Nutritional outcomes	Unclear risk	Not stated.
Incomplete outcome data (attrition bias) All outcomes	Low risk	62 participants randomised in the study: 6 participants did not receive the intervention; 6 were lost to follow; 4 deaths ( all in the intervention group); 2 participants received dialysis.
Selective reporting (reporting bias)	Low risk	Data on mortality, change in weight and energy intake were used in this review. The data are reported in the paper but the weight data is presented as a mean (SD) at baseline and at 12 weeks and therefore the mean change with SD has been obtained from the authors. The energy intake data reported in kJ/kg, mean change (SD) in kcals obtained from the author.
Other bias	Unclear risk	Baseline variables stated, groups similar at baseline apart from amounts of malnutrition (see above).