Oral antidiabetic drugs and regression from prediabetes to normoglycemia: a meta-analysis
Abstract
BACKGROUND: Impaired glucose tolerance, impaired fasting glucose, and elevated hemoglobin A(1c) are intermediate stages, considered prediabetes, a precursor to overt type 2 diabetes mellitus. Prediabetes is associated with increased risk for cardiovascular disease, independent of diabetes development. Data have shown that various oral antidiabetic drugs can help people regress from prediabetes to normoglycemia.
OBJECTIVE: To evaluate the efficacy of oral antidiabetic drugs in promoting regression from prediabetes to normoglycemia.
METHODS: MEDLINE (1950-November 2011), EMBASE (1990-November 2011), and Cochrane Central Register of Controlled Trials (indexed September 2011) were systematically searched. A manual search of references from reports of clinical trials and review articles was performed to identify additional relevant studies. Randomized controlled trials 12 weeks or more in duration evaluating any of the oral antidiabetic drugs and studying regression from prediabetes to normoglycemia were included. A random-effects model was used to calculate pooled odds ratios with 95% confidence intervals.
RESULTS: Thirteen studies (N = 11,600 participants) were included in the meta-analysis. Use of oral antidiabetic drugs in prediabetic patients was shown to double the odds of achieving normoglycemia compared to controls (OR 2.03, 95% CI 1.54 to 2.67). When individual classes of oral antidiabetic drugs were evaluated, use of thiazolidinediones (OR 2.33, 95% CI 1.93 to 2.81) and…
How strong is the evidence?
Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 11,600 participants or records.
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