An Analysis of Patient Experience and Adherence to Diabetes Medication among Military Health System Beneficiaries

Few studies have investigated the relationship between patient experience and diabetes medication adherence among Military Health System (MHS) beneficiaries. We explored the link between patient experience survey ratings and adherence to diabetes medication. The hypothesis was that adherent patients would report better provider-patient experience than non-adherent patients.

Data included 2,599 patient surveys and pharmacy refill records. Adherence was determined using proportion of days covered (PDC) methodology where a patient must have had medications available 80% or more of the time during the observation period. Analysis involved multivariable logistic regression.

Medication adherence was 60.2%. Regarding patient experience, those who were with their provider for 5 years or more had greater odds of adherence (OR 1.86[95%CI 1.19, 2.90]) Most of the patients in this study had high morbidity and high care utilization. Patient characteristics that significantly (p is less than 0.05) differentiated adherent versus non-adherent patients were race, mental health status, multiple medication use, glycated hemoglobin (HbA1c) levels, and health utilization.

Two key factors of adherence that emerged from this study are that moderate (OR 2.54[95%CI 1.35, 4.75]) and elevated (OR 2.35[95%CI 1.29, 4.30]) HbA1c and patients with 7+ health care providers (OR 1.56[95%CI 1.06,2.29]) had greater odds of adherence. Findings suggest that ability to see provider when needed and provider continuity support adherence to treatment. The practice implications of this study are health practitioners can leverage patient experience and pharmacy data to identify patterns of adherence among patients in the MHS.