Evaluating Medication Day-Supply for Improving Adherence and Clinical Biomarkers of Hemoglobin A1c, Blood Pressure, and Low-Density Lipoprotein

Objectives: To compare a 90-day-supply and a less than 90-day-supply of medication on adherence to refilling prescriptions and clinical biomarkers for hemoglobin A1c (HbA1c), blood pressure (BP), and low-density lipoprotein (LDL). Methods: A retrospective chart review was completed for a cohort of patients prescribed an oral hypoglycemic agent (OHA), angiotensin-converting enzyme inhibitor (ACEI), or angiotensin II receptor blocker (ARB), and/or a statin. Data were categorized into 90-day-supply and less than 90-day-supply and on the minimum value for control determined by the CMS Star Ratings system. Adherence was defined by the Health Plan Quality Improvement Department as ≥ 85% of days covered. Clinical biomarker cutoffs were HbA1c (140 mm Hg or Diastolic BP ≥ 90 mm Hg regardless of SBP), and LDL (