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European Journal of Clinical Pharmacology

, Volume 73, Issue 5, pp 615–621 | Cite as

Potentially inappropriate medications: predictor for mortality in a cohort of community-dwelling older adults

  • Mariana Martins Gonzaga do NascimentoEmail author
  • Juliana Vaz de Melo Mambrini
  • Maria Fernanda Lima-Costa
  • Josélia Oliveira Araújo Firmo
  • Sérgio William Viana Peixoto
  • Antônio Ignácio de Loyola Filho
Pharmacoepidemiology and Prescription

Abstract

Purpose

The objective of this study was to investigate whether the potentially inappropriate medication (PIM) use is a predictor for mortality in a community-based population of older adults.

Methods

A cohort study was performed between January 1, 1997, and December 31, 2011, based on data from a representative sample of the population aged 60 years or older living in Bambuí, Brazil. Univariate and multivariate analyses of the association between the variable of interest (use of PIM or pharmacological groups of PIM) and mortality were based on the extended Cox model for proportional hazards. The extended model was adopted to include the measurement of the exposure of interest throughout the follow-up period and not only at baseline. Adjustment variables included sociodemographic characteristics, health status, and use of health care services and medications. A level of significance of 5% was adopted for all analyses.

Results

The prevalence of PIM use was 56.0% (95%CI 53.4–58.6). After multiple adjustments, the risk of death among users of at least one PIM was 44% higher (HR = 1.44; 95%CI 1.21 to 1.71) than among those who did not use any PIM. Among the PIM groups analyzed, antipsychotics were the most strongly associated with mortality (HR = 2.33; 95%CI 1.72 to 3.17).

Conclusions

The study revealed a high prevalence of PIM use among the community-based aged population. It also identified PIM use as a predictor for mortality in this group of individuals. This indicates the need for selection of safer drug therapy alternatives in this patient group.

Keywords

Potentially inappropriate medication Beers criteria Inappropriate prescribing Aged Cohort studies Mortality 

Notes

Authors’ contributions

Nascimento, Mambrini, Lima-Costa, Firmo, Loyola-Filho: concept and design; acquisition, analysis, and interpretation of data; drafting and revising the article critically for important intellectual content. Peixoto: analysis and interpretation of data, drafting and revising the article critically for important intellectual content. All authors reviewed and approved the submitted version of the article.

Compliance with ethical standards

Funding sources

The baseline survey and subsequent five visits of the Bambuı Cohort Study of Aging were sponsored by the Financiadora de Estudos e Projetos (FINEP), Brazil. Other visits were sponsored by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), and Fundação Oswaldo Cruz (FIOCRUZ), Brazil.

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study. This article does not contain any studies with animals performed by any of the authors.

Supplementary material

228_2017_2202_MOESM1_ESM.docx (17 kb)
ESM 1 (DOCX 16 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Mariana Martins Gonzaga do Nascimento
    • 1
    • 2
    Email author
  • Juliana Vaz de Melo Mambrini
    • 1
  • Maria Fernanda Lima-Costa
    • 1
  • Josélia Oliveira Araújo Firmo
    • 1
  • Sérgio William Viana Peixoto
    • 1
  • Antônio Ignácio de Loyola Filho
    • 1
    • 3
  1. 1.Center for Studies on Aging and Public Health (NESPE), René Rachou Research Center (CPqRR)Oswaldo Cruz Foundation (FIOCRUZ)Belo HorizonteBrazil
  2. 2.Department of Social Pharmacy, School of PharmacyFederal University of Minas Gerais (UFMG)Belo HorizonteBrazil
  3. 3.Department of Applied Nursing, Nursing SchoolFederal University of Minas Gerais (UFMG)Belo HorizonteBrazil

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