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This study compared persistence on and adherence to therapy with glipizide gastrointestinal therapeutic system (GITS), glipizide immediate release (IR) and glibenclamide (glyburide) in commercially insured patients newly treated for type 2 diabetes mellitus. The objective of the study was to determine if there were differences in persistence and adherence between the three second-generation sulphonylureas.

This was a retrospective longitudinal claims data analysis for commercial enrollees in eight independent practice model health plans. Study subjects were 25 years of age or older with a first prescription for a study drug from 1 January 1996 through 31 December 1999. All subjects were newly treated with medication for diabetes mellitus, and were initiated on monotherapy. To be included in the study, subjects had to be …