Characteristics of the included studies

<p>Exp: Experimental. ^Ψ: Percentage of patients requiring insulin therapy in experimental group. BMI: Body mass index. SD: Standard deviation. NA: Not available. GCT: Glucose challenge test. OGTT: Oral glucose tolerance test, RBG: Random blood glucose, FPG: Fasting plasma glucose.*BMI was ≥27 in 38% of patients in experimental group and 41% of patients in control.