Date of Conferral

2-4-2025

Degree

Doctor of Psychology (Psy.D.)

School

Psychology

Advisor

Charles Diebold

Abstract

Adverse drug interactions due to polypharmacy pose a significant global health concern, particularly for older adults. Age-related physiological changes increase vulnerability to medication-related issues, with adverse drug reactions often mistaken for normal aging. These misdiagnoses can lead to prescribing cascades and preventable harm. Despite evidence supporting comprehensive medication reviews and clinical guidelines, their application remains inconsistent across healthcare settings. This quantitative archival analysis aimed to identify critical risk factors—such as age, sex, race, education level, medication complexity, drug interaction discussions, number of prescriptions, and overall physical and mental health—that influence older adults’ confidence in avoiding drug interactions. Grounded in the Health Belief Model and Self-Efficacy Theory, the study examined how health motivation and self-efficacy shape medication management. Using multiple linear regression and secondary data, the analysis revealed that communication with healthcare providers significantly enhanced confidence in managing medications and avoiding adverse drug interactions. Physical and mental health were also strong predictors of confidence. These findings underscore the importance of patient-provider communication, health literacy, and interdisciplinary collaboration in minimizing adverse drug interactions. The study highlights the potential for positive social change by improving medication management, reducing hospitalizations, and enhancing health outcomes for older adults through targeted interventions and comprehensive care strategies.

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