OBJECTIVE: To measure the prevalence of potentially inappropriate prescribing (PIP) among the elderly population in Catalonia using criteria Screening Tool of Older Person's Prescriptions/Screening Tool to Alert doctors to Right Treatment (STOPP/START) version 2. In addition, to evaluate the association between PIP and several factors (polypharmacy, gender, age and sociodemographic conditions).
MATERIALS AND METHODS: Design: Retrospective cross sectional population study.
SETTINGS: Primary Health Care, Catalonia, Spain.
PARTICIPANTS: The study population comprised of participants 70 years old and over, who attended primary health care centres in Catalonia in 2014 (700.058 patients).
MAIN ANALYSIS: 55 STOPP and 19 START criteria are applied to analyse PIP prevalence. Logistic regression models are adjusted to determine PIP association with several factors.
RESULTS: The mean age is 79. 2±6.5. 58.5% being female. 38.7% of patients have 7 or more prescribed drugs, whereas 50% go to a primary care centre 10 or more times during one year. The most frequent PIP among STOPP criteria are related to nonsteroidal anti-inflammatory drug intake, antiplatelet and anticoagulants use, and benzodiazepines. According to START, the most frequent omissions are vitamin D and calcium supplements, antidepressants, and cardiovascular medications. Factors that increase PIP are: female gender, living in a nursing home, receiving home health care, polypharmacy and frequent visits to primary care centres.
CONCLUSIONS: The overall prevalence of PIP is 89.6%. PPI is significantly related to certain drugs and patient's conditions. The knowledge of this association is important for the implementation of security measures for medical prescription.
