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Factors Associated With Medication Adherence In Elderly Retired Outpatients In São Paulo, Brazil

Authors Valassi JMR, Carvas Junior N, Matsura Shirassu M, de Paula KE, Atkinson ER, Koike MK

Received 8 March 2019

Accepted for publication 1 September 2019

Published 30 September 2019 Volume 2019:13 Pages 1619—1628


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Johnny Chen

Juliana Martins Ribeiro Valassi,1 Nelson Carvas Junior,1 Mirian Matsura Shirassu,1 Kaleo Eduardo de Paula,1 Elena R Atkinson,2 Marcia Kiyomi Koike1,3

1Health Sciences Department, Institute for Medical Assistance to State Public Servants, São Paulo, Brazil; 2Fundación IDEA, Mexico City, Mexico; 3Emergency Medicine Department, Medical School, University of São Paulo, São Paulo, Brazil

Correspondence: Marcia Kiyomi Koike
Programa de Pós-Graduação em Ciências da Saúde. Instituto de Assistência Médica ao Servidor Público Estadual (IAMSPE), Brasil Av. Ibirapuera, 981 - 2º andar, Vila Clementino, São Paulo/SP CEP: 04029-000, Brazil
Tel +55 11 9 9964-8421

Objective: To evaluate medication adherence and associated socioeconomic factors in elderly Brazilians.
Methodology: This observational study was conducted with 159 elderly retired in an outpatient clinic in the city of São Paulo. Treatment adherence was assessed with the questions from the Morisky Green Levine Medication Adherence Questionnaire, and medications were classified using the Anatomical Therapeutic Chemical system. Statistical tests and adjusted Poisson regression models were used to analyze variables.
Results: The study population was mostly female (67.5%), had an average age of, and took an average of 6.5 medications per day. The most commonly used drugs were agents acting on the renin-angiotensin system (67.9%), statins (62.3%), antithrombotic agents (48.4%), and biguanides (37.1%) for the treatment of hypertension (76.7%), dyslipidemia (54.1%), and diabetes (47.8%). The rate of adherence was below 60% in the groups of participants that were analyzed except for the high household income category, which had a rate of 75.8%.
Conclusion: Medication adherence among the elderly was low in all categories except for the high household income category, a relevant finding that will help to understand medication adherence patterns in elderly Brazilians.

Keywords: medication adherence, aged, geriatrics, polypharmacy, drug therapy, socioeconomic factors

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