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Prospective randomized controlled trial to evaluate effectiveness of registered dietitian-led diabetes management on glycemic and diet control in a primary care setting in Taiwan |
Huang M-C, Hsu C-C, Wang H-S, Shin S-J |
Diabetes Care 2010 Feb;33(2):233-239 |
clinical trial |
4/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
OBJECTIVE: In this randomized controlled trial we evaluated the effect of registered dietitian-led management of diabetes on glycemic control and macronutrient intake in type 2 diabetic patients in primary care clinics in Taiwan and studied the association between changes in macronutrient intake and glycemic measures. RESEARCH DESIGN AND METHODS: We recruited 154 adult patients with type 2 diabetes and randomly assigned them to a routine care control group (n = 79) or a registered dietitian-led intervention group (n = 75) who received on-site diabetic self-management education every 3 months over 12 months. RESULTS: Over the 1-year period, neither the intervention group (n = 75) nor the control group (n = 79) had significant changes in A1C, whereas the intervention patients with poorly controlled baseline A1C (>= 7%) (n = 56) had significantly greater improvements in A1C and fasting plasma glucose than the control subjects (n = 60) (-0.7 versus -0.2%, p = 0.034; -13.4 versus 16.9 mg/dl, p = 0.007) during the same period. We also found significant net intervention-control group differences in overall energy intake (-229.06 +/- 309.16 versus 56.10 +/- 309.41 kcal/day) and carbohydrate intake (-31.24 +/- 61.53 versus 7.15 +/- 54.09 g/day) (p < 0.001) in patients with poorly controlled A1C. Multivariable adjusted modeling revealed an independent association between changes in carbohydrate intake and A1C in the intervention group (n = 56; beta = 0.10, SEM 0.033, p = 0.004). CONCLUSIONS: On-site registered dietitian-led management of diabetes can improve glycemic control in patients with poorly managed type 2 diabetes in primary care clinics in Taiwan. A reduction in carbohydrate intake may improve glycemic status.
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