Reducing inappropriate outpatient antibiotic prescribing: normative comparison using unblinded provider reports

Importance Antibiotic resistance is a global health issue. Up to 50% of antibiotics are inappropriately prescribed, the majority of which are for acute respiratory tract infections (ARTI). Objective To evaluate the impact of unblinded normative comparison on rates of inappropriate antibiotic prescribing for ARTI. Design Non-randomised, controlled interventional trial over 1year followed by an open intervention in the second year. Setting Primary care providers in a large regional healthcare system. Participants The test group consisted of 30 primary care providers in one geographical region; controls consisted of 162 primary care providers located in four other geographical regions. Intervention The intervention consisted of provider and patient education and provider feedback via biweekly, unblinded normative comparison highlighting inappropriate antibiotic prescribing for ARTI. The intervention was applied to both groups during the second year. Main outcomes and measures Rate of inappropriate antibiotic prescription for ARTI. Results Baseline inappropriate antibiotic prescribing for ARTI was 60%. After 1year, the test group rate of inappropriate antibiotic prescribing decreased 40%, from 51.9% to 31.0% (p<0.0001), whereas controls decreased 7% (61.3% to 57.0%, p<0.0001). In year 2, the test group decreased an additional 47% to an overall prescribing rate of 16.3%, and the control group decreased 40% to a prescribing rate of 34.5% after implementation of the same intervention. Conclusions and relevance Provider and patient education followed by regular feedback to provider via normative comparison to their local peers through unblinded provider reports, lead to reductions in the rate of inappropriate antibiotic prescribing for ARTI and overall antibiotic prescribing rates.