Table 1.

Search terms and search strategy (adapted from Ojo et al. [20]).

Population	Interventions	Outcome	Design of Study	Search Terms Combined
Patients with diabetes	Dietary fibre	Gut microbiota	Randomised controlled trial
Type 2 diabetes OR Patients with diabetes OR Diabetes OR diabetes mellitus, type 2 OR Diabetes complications OR diabetes mellitus	Fibre OR Dietary fibre OR Supplement OR Prebiotics OR Dietary supplements OR Dietary fibre OR Dietary carbohydrate OR Polysaccharide OR Wheat bran	Microbiome OR Microbiota OR Gastrointestinal microbiota OR Gut microbiota	#1 Controlled clinical trial OR Randomised controlled trial OR randomly OR trial randomised OR placebo OR groups OR drug therapy #2 “Animals” NOT “Humans” #3 #1 NOT #2	Column 1 AND Column 2 AND Column 3 AND Column 4