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STUDY DESIGN
Design:
randomised controlled trial.
Allocation:
unclear.*
Blinding:
blinded (technical staff and statistician for the preliminary assessment of glycated haemoglobin [HbA1c] concentrations).*
STUDY QUESTION
Setting:
St Michael’s Hospital, Toronto, Ontario, Canada.
Patients:
210 patients (mean age 60 y, 61% men) with type 2 diabetes who were taking oral medications (except acarbose) to maintain HbA1c concentrations at 6.5% to 8%.
Intervention:
low–glycaemic index diet (n = 106) or high–cereal fibre diet (n = 104) for 6 months. The low-glycaemic diet consisted of low–glycaemic index breads and cereals, pasta, parboiled rice, beans, peas, lentils, nuts, and temperate fruits. The high–cereal fibre diet consisted of whole grain and whole wheat breads and cereals, brown rice, potatoes with skins, and tropical fruits. All participants were advised to avoid certain foods, including pancakes, muffins, …