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.