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Multicenter Study Comparative Study Observational Study
Comparative effectiveness of vildagliptin in combination with other oral anti-diabetes agents in usual-care conditions: the EDGE-Latin America study.
- Carlos O Mendivil, Eduardo Márquez-Rodríguez, Iván D Angel, Gustavo Paz, Cruz Rodríguez, Jorge Almada, and Ofelia Szyskowsky.
- Universidad de los Andes, School of Medicine , Bogotá , Colombia.
- Curr Med Res Opin. 2014 Sep 1; 30 (9): 176917761769-76.
ObjectiveTo assess the proportion of patients on vildagliptin add-on dual therapy who respond to treatment over a 12 month follow-up, relative to comparator oral anti-diabetes dual therapy, in a usual care setting.Research Design And MethodsParticipants were patients with type 2 diabetes (T2DM) aged 18 years and older from 311 centers in Argentina, Colombia, Ecuador, Mexico and Venezuela. Patients were taking monotherapy with an oral anti-diabetes drug (OAD), and were prescribed a new add-on OAD based on the judgment of their personal physician. According to this choice, patients were assigned to one of the two cohorts: vildagliptin or comparator OADs.Main Outcome MeasuresThe primary endpoint was the proportion of patients achieving an A1c drop >0.3% without edema, hypoglycemia, weight gain or discontinuation due to gastrointestinal (GI) events. The secondary endpoint was the proportion of patients with baseline A1c ≥7% who reached the goal of an A1c <7% without hypoglycemia or weight gain.ResultsThe per-protocol population (a subset of the intention-to-treat population that excluded patients with pre-specified protocol deviations) comprised 3773 patients, 3002 in the vildagliptin cohort and 771 in the comparator cohort. The proportion of patients reaching the primary endpoint was higher in the vildagliptin cohort (60.3%) than the comparator cohort (50.7%), OR 1.48 (95% CI: 1.25-1.73). The same was observed for the secondary endpoint (44.8 versus 33.1%) OR 1.64 (95% CI: 1.37-1.98). The incidence of adverse events was low and similar between treatment cohorts.ConclusionIn a usual care setting, patients treated with a vildagliptin combination succeeded in lowering A1c to <7%, without weight gain, hypoglycemia or peripheral edema more often than patients treated with comparator combinations, without increased risk of adverse events. Key limitations are the observational nature of the study and its relatively limited 12 month timeframe.
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