Prescription patterns of antidiabetic and cardiovascular preventive medications in community-dwelling older adults with type 2 diabetes mellitus: a cross-sectional study.

OBJECTIVE: To describe trends in antidiabetics drug prescription patterns in community-dwelling older adults with type 2 diabetes mellitus (T2DM) and to evaluate the use of cardiovascular preventive medications among those diagnosed with atherosclerotic cardiovascular disease (ASCVD).

METHODS: This cross-sectional, face-to-face interview study that comprised community-dwelling older adults (≥ 65 years) diagnosed with T2DM. The study questionnaire included the patients' demographics, clinical data, and current medication use. Patients with established ASCVD were further classified into low (i.e., not receiving evidence-based therapy or only one) and high (i.e., receiving at least two evidence-based therapies) composite score groups. Bivariate analysis followed by multivariable logistic regression analysis were performed to evaluate the demographic/clinical characteristics associated with the use of antidiabetic monotherapy/polytherapy and evidence-based pharmacotherapy.

RESULTS: A total of 500 older adults were enrolled. The mean age of included participants was 73 ± 7 years, 310 participants (62%) were males, and 385 participants (77.0%) had established ASCVD. Antidiabetic monotherapy was reported in 251 participants (50.2%), with metformin followed by sulfonylureas being the most commonly prescribed drugs as monotherapy. The results of the multivariable analysis showed that age [odds ratio (OR) = 0.89, 95% CI: 0.85-0.94, P < 0.001], obesity (OR = 4.18, 95% CI: 1.63-10.36, P = 0.003), hypertension (OR = 4.2, 95% CI: 1.22-7.66, P = 0.04), and dyslipidemia (OR = 4.1, 95% CI: 1.28-8.30, P = 0.01), were significantly associated with the prescription of cardiovascular preventive medications.

CONCLUSIONS: Only one in twenty-one participant with T2DM and ASCVD collectively received three guideline-recommended therapies, indicating a deficiency of utilization of cardiovascular preventive drugs.