EXPERIMENTAL AND THERAPEUTIC MEDICINE 9: 1528-1536, 2015

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Efficacy and safety of sitagliptin compared with sulfonylurea therapy in patients with type 2 diabetes showing inadequately controlled glycosylated hemoglobin with metformin monotherapy: A meta-analysis LIQIONG HOU, TIEYUN ZHAO, YUNHUI LIU and YIYI ZHANG Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, Sichuan 610000, P.R. China Received June 18, 2014; Accepted January 26, 2015 DOI: 10.3892/etm.2015.2277 Abstract. Previous randomized controlled trials (RCTs) have reported conflicting results for the efficacy of sitagliptin and sulfonylurea therapy in patients with type 2 diabetes mellitus showing inadequate glycemic control with metformin monotherapy. To clarify these findings, a meta‑analysis was conducted of the outcomes of all published RCTs comparing sitagliptin with sulfonylureas in the treatment of type 2 diabetes mellitus. Standard medical databases were searched to identify relevant English‑ and Chinese‑language RCTs. RCT results were compared regarding the mean change in glycated hemoglobin (HbA1c) level; the proportion achieving 50% considered an indication of significant heterogeneity between two trials. A random‑effects model was used in the presence of heterogeneity and a fixed‑effects model in the absence of heterogeneity. The weighted mean difference (WMD) or odds ratio and its 95% confidence interval (CI) for each outcome relative to the control were calculated for continuous and dichotomous variables, respectively. Studies were excluded from the meta‑analysis if insufficient information was provided to enable standard error calculation. Results Study selection. The database search results are summarized in Fig. 1. Among the 33 full‑text articles that were assessed for eligibility, six reported the results of six RCTs (14‑17,19,20) that fulfilled all the inclusion criteria and none of the exclusion criteria. The main reasons for the exclusion of six potential RCTs were the evaluation of the addition of more than one drug with metformin monotherapy, the inclusion of participants undergoing background therapies other than metformin, trial durations of

Efficacy and safety of sitagliptin compared with sulfonylurea therapy in patients with type 2 diabetes showing inadequately controlled glycosylated hemoglobin with metformin monotherapy: A meta-analysis.

Previous randomized controlled trials (RCTs) have reported conflicting results for the efficacy of sitagliptin and sulfonylurea therapy in patients wi...
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