Objective-Diabetes mellitus is common in the nursing home (NH) population, yet little is known is known about prescribing of glucose-lowering medications in the NH setting. We describe trends in initiation of glucose-lowering medications in a national cohort of NH residents.Design and Setting-Retrospective cohort study using Part A and D claims for a random 20% of Medicare enrollees linked to NH Minimum Data Set (MDS) and Online Survey, Certification, And Reporting (OSCAR) databases in 7,158 U.S. NHs.Correspondence, Andrew R. Zullo, PharmD, ScM, Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-2, Providence, RI 02912, Phone: 401-863-3172, andrew_zullo@brown.edu. Alternate Correspondence, Robert J. Smith, MD, Department of Health Services, Policy, and Practice, Brown University School of Public Health, 121 South Main Street, Box G-S121-6, Providence, RI 02912, Phone: 401-444-3420, robert_j_smith@brown.edu. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Measurements-Medicare Part D drug dispensings of glucose-lowering treatments; resident and facility characteristics preceding medication initiation.
HHS Public AccessResults-We observed decreasing sulfonylurea initiation from 25.4% of initiations in 2008 to 11.7% in 2010, an average decrease of 1% per quarter (95% CLs: −1.5, −0.5). Thiazolidinedione initiation decreased from 4.7% to 1.9%, an average decrease of 0.3% per quarter (95% CLs: −0.4, −0.2), and meglitinide initiation from 1.5% to 0.3%. No appreciable linear trends were observed for metformin (range 12-18.8%) and dipeptidyl peptidase-4 (DPP-4) inhibitors (range 0.9-2.7%). In contrast, insulin use increased from 51.7% to 68.3% during the same time period, driven by a marked increase in initiation of rapid-acting insulin (11% to 29.4%; average increase of 1.4% per quarter, 95% CLs: 0.9, 1.9) and a modest increase in short-acting insulin (22.6% to 30.3%; an average increase of 0.6% per quarter, 95% CLs: −0.1, 1.3).Conclusions-Between 2008 and 2010 there were substantial decreases in the use of oral glucose-lowering agents and corresponding increases in the use of insulin among long-term residents of U.S. nursing homes.