Self-Medication Practices, Use of Brand-Name, and Over-the-Counter Medicines by Peruvian Older Adults

Authors

  • Percy Herrera-Añazco Universidad Privada del Norte; Red Internacional en Salud Colectiva y Salud Intercultural
  • Benoit Mougenot Universidad San Ignacio de Loyola
  • Jerry K. Benites-Meza Universidad Nacional de Trujillo; Universidad San Ignacio de Loyola
  • Luz C. Barturén-Alvarado Universidad Señor de Sipán
  • Carlos J. Zumarán-Nuñez Universidad San Ignacio de Loyola; Universidad Señor de Sipán
  • Maria A. Boyd-Gamarra Universidad Señor de Sipán
  • Fernando M. Runzer-Colmenares Universidad Científica del Sur
  • Vicente A. Benites-Zapata Red Internacional en Salud Colectiva y Salud Intercultural; Universidad San Ignacio de Loyola

DOI:

https://doi.org/10.5770/cgj.26.631

Keywords:

health of the elderly, aged, pharmacies, self-medication, drugs, generic, nonprescription drugs, Peru

Abstract

Background

Older adults are a particularly vulnerable group to drug use and self-medication. The aim of the study was to evaluate self-medication as a factor associated with the purchase of brand-name and over-the-counter (OTC) drugs in older adults in Peru.

Methods

A secondary analysis was performed using an analytical cross-sectional design of data from a nationally representative survey from 2014 to 2016. The exposure variable was self-medication, defined as the purchase of medicines without a prescription. The dependent variables were purchases of brand-name and OTC drugs, both as a dichotomous response (yes/no). Information of sociodemographic variables, health insurance, and the types of drugs purchased by the participants was collected. Crude prevalence ratios (PR) were calculated and adjusted using generalized linear models of the Poisson family, considering the complex sample of the survey.

Results

In this study, 1,115 respondents were evaluated, with a mean age of 63.8 years and a male proportion of 48.2%. The prevalence of self-medication was 66.6%, while the proportions of purchases of brand-name and OTC drugs were 62.4% and 23.6%, respectively. The adjusted Poisson regression analysis revealed an association between self-medication and the purchase of brand-name drugs (adjusted PR [aPR]=1.09; 95% confidence interval [CI]: 1.01–1.19). Likewise, self-medication was associated with the purchase of OTC medications (aPR=1.97; 95%CI: 1.55–2.51).

Conclusions

This study evidenced a high prevalence of self-medication in Peruvian older adults. Two-thirds of the surveyed people bought brand-name drugs, whereas one-quarter bought OTC drugs. Self-medication was associated with a greater likelihood of buying brand-name and OTC drugs.

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Published

2023-03-02

How to Cite

1.
Herrera-Añazco P, Mougenot B, Benites-Meza JK, Barturén-Alvarado LC, Zumarán-Nuñez CJ, Boyd-Gamarra MA, Runzer-Colmenares FM, Benites-Zapata VA. Self-Medication Practices, Use of Brand-Name, and Over-the-Counter Medicines by Peruvian Older Adults. Can Geriatr J [Internet]. 2023 Mar. 2 [cited 2023 Mar. 25];26(1):187-99. Available from: https://cgjonline.ca/index.php/cgj/article/view/631

Issue

Section

Original Research