Association of US Food and Drug Administration Removal of Indications for Use of Oral Quinolones With Prescribing Trends
Abstract
Importance: In May 2016, due to concerns of the risks outweighing the benefits, the US Food and Drug Administration (FDA) removed systemic quinolones' indications for acute, uncomplicated urinary tract infection (uUTI), acute sinusitis (AS), and acute exacerbation of chronic obstructive pulmonary disease (AE-COPD). How the change influenced oral quinolone use is unknown.
Objective: To assess the association of oral quinolone safety warnings and indication restrictions with use.
Design, setting, and participants: This interrupted time series (January 2015-November 2018) analysis of the monthly prevalence of oral quinolone-treated infection episodes used a national sample of privately insured patients in outpatient care from the IBM MarketScan Database and included adults with antibiotic treatment of new uUTI, AS, or AE-COPD episodes, excluding patients with conditions that complicate infections, previous hospitalization, or other infections.
Exposures: Time before and after May 2016 when the FDA mandated label changes.
Main outcomes and measures: Monthly oral quinolone use prevalence by each condition before and after the label changes, overall and stratified by prescriber specialty.
Results: In January 2015, quinolone prevalence among antibiotic-treated uUTI episodes (n = 652 235) was 41.6% (95% CI, 40.6%-42.5%); AS (n = 1 742 248) was 8.3% (95% CI, 7.9%-8.6%), and AE-COPD (n = 22 817) was 31.9% (95% CI, 30.3%-33.4%). Before the label changes, trends in monthly quinolone…
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