Objectives: to describe the use of proton pump inhibitors (PPI) and ranitidine in the general population living in the area of the Healthcare Authority and University of Udine (Friuli Venezia Giulia, Northeastern Italy) and to evaluate whether there are any cases of co-prescription of medications in those classes.
Design: analysis of health-related administrative databases (list of potential healthcare beneficiaries, prescriptions of medications, exemption from medical charges because of chronic conditions, list of general practitioners).
Setting and participants: population of the Italian area of the Healthcare Authority and University of Udine (approximately 250,000 inhabitants) ≥1 year of age as of January 1st, 2016.
Main outcome measures: prevalence of PPI or H2RA use (>1 prescription in 2016), overall and stratified by drug, age class and sex; duration of the theoretical period covered by prescriptions; prevalence of co-prescriptions; association of co-prescriptions and clinical and demographic characteristics of patients (odds ratio and 95% confidence intervals).
Results: in 2016, 162 persons per 1,000 used those medications; in particular, 158/1,000 used PPIs. Prevalence of use increased with age, as did the median treatment duration with PPIs. Co-prescription of two medications of the same class were observed in 0.43% of antacid users. The likelihood of receiving co-prescriptions was higher among non-elderly subjects, long-term PPI users, and those with chronical diseases, such asthma.
Conclusion: in the considered Italian area, PPIs and ranitidine were frequently used, although less than in the rest of Italy. We observed occasionally non-recommended practices, such as the co-prescription of different medications of the same class or with the same indications.