Study objectives and endpoints
The main objective of the study was to determine the prevalence of prescribing issues, including: concomitant medication that had to be stopped (PIMs according to the BEERS criteria or PIP according to the STOPP criteria), concomitant medication that the patient should have been receiving but was not (PPOs according to the STOPP/START criteria), and/or potential and relevant drug interactions between concomitant treatment and ART according to the University of Liverpool website (see definitions below). The secondary objectives included determination of the concordance between the Beers and the STOPP/START criteria in our population, as well as identification of the drugs most frequently involved in the prescribing issues.