Evaluation of a Randomized Trial of Personalized Physician Prescribing Portraits on Uncomplicated Acute Cystitis in British Columbia

Project number: 
Approval date: 
Wednesday, May 6, 2015
Principal Investigator: 
University of British Columbia (UBC)
Funding Agency: 
Not Available
Datasets requested: 
Not available
Research objective: 

Research Questions:

Primary analysis: Determine the change in antibiotic prescribing in the group of physicians who received a personal prescribing portrait for UAC

Secondary analysis: If a change in antibiotic prescribing in the intervention group is observed, measure persistence throughout the one-year post intervention period, and persistence in the second year post-intervention.

Secondary analysis: Determine the change in physician ICD-9 diagnosis coding for Cystitis on their Medical Services Plan Billing Claims.

Secondary utilization analysis: Describe and compare the characteristics of the early intervention versus delayed control physician groups. Estimate trends and patterns of health service utilization use amongst patients who were diagnosed with UAC.


The personal prescribing feedback portrait will be associated with an increase in nitrofurantoin prescribing, and a decrease in ciprofloxacin and TMP-SMX prescribing, in the treatment of UAC. No change in the proportion of patients receiving no drug therapy for a diagnosis of UAC.

Page last revised: December 5, 2017