Frans Folkvord, Ana Roca‐Umbert Würth, Karlijn van Houten, Aad R. Liefveld, Jim Ingebretsen Carlson, Nadine Bol, Emiel Krahmer, Gwenn Beets, Rachel Drbohlav Ollerton, Eva Turk, Harald Hrubos‐Strøm, Hamza Nahoui, Gunnar Einvik, Henrik Schirmer, Anne Moen, Jaime Barrio‐Cortes, Beatriz Merino‐Barbancho, Peña Arroyo, Giuseppe Fico, Luís Midão, Rute Sampaio, João A. Fonseca, Katja Geipel, Kathrin Scheckenbach, Laura E. de Ruiter, Francisco Lupiáñez‐Villanueva

A systematic review on experimental studies about patient adherence to treatment

  • General Pharmacology, Toxicology and Pharmaceutics
  • Neurology

AbstractA better understanding of patients' adherence to treatment is a prerequisite to maximize the benefit of healthcare provision for patients, reduce treatment costs, and is a key factor in a variety of subsequent health outcomes. We aim to understand the state of the art of scientific evidence about which factors influence patients' adherence to treatment. A systematic literature review was conducted using PRISMA guidelines in five separate electronic databases of scientific publications: PubMed, PsycINFO (ProQuest), Cochrane library (Ovid), Google Scholar, and Web of Science. The search focused on literature reporting the significance of factors in adherence to treatment between 2011 and 2021, including only experimental studies (e.g., randomized controlled trials [RCT], clinical trials, etc.). We included 47 experimental studies. The results of the systematic review (SR) are grouped according to predetermined categories of the World Health Organization (WHO): socioeconomic, treatment, condition, personal, and healthcare‐related factors. This review gives an actual overview of evidence‐based studies on adherence and analyzed the significance of factors defined by the WHO classification. By showing the strength of certain factors in several independent studies and concomitantly uncovering gaps in research, these insights could serve as a basis for the design of future adherence studies and models.

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