UBC Faculty Research and Publications

Quantifying the Gap between Expected and Actual Rates of Antibiotic Prescribing in British Columbia, Canada Saatchi, Ariana; Yoo, Ji-Won; Schwartz, Kevin L.; Silverman, Michael; Morris, Andrew M.; Patrick, David; McCormack, James; Marra, Fawziah

Abstract

Despite decades of stewardship efforts to combat antimicrobial resistance and quantify changes in use, the quality of antibiotic use in British Columbia (BC) remains unknown. As the overuse and misuse of antibiotics drives antibiotic resistance, it is imperative to expand surveillance efforts to examine the quality of antibiotic prescriptions. In late 2019, Canadian expected rates of antibiotic prescribing were developed for common infections. These rates were utilized to quantify the gap between the observed rates of prescribing and Canadian expected rates for antibiotic use for the province of BC. The prescribing data were extracted and matched to physician billing systems using anonymized patient identifiers from 1 January 2000 to 31 December 2018. Outpatient prescribing was further subdivided into community and emergency department settings and stratified by the following age groups:

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