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The devil’s in the defaults: An interrupted time-series analysis of the impact of default duration elimination on exposure to fluoroquinolone therapy
Published online by Cambridge University Press: 13 February 2024
Abstract
Objective:
To determine whether removal of default duration, embedded in electronic prescription (e-script), influenced antibiotic days of therapy.
Design:
Interrupted time-series analysis.
Setting:
The study was conducted across 2 community hospitals, 1 academic hospital, 3 emergency departments, and 86 ambulatory clinics.
Patients:
Adults prescribed a fluoroquinolone with a duration <31 days.
Interventions:
Removal of standard 10-day fluoroquinolone default duration and addition of literature-based duration guidance in the order entry on December 19, 2017. The study period included data for 12 months before and after the intervention.
Results:
The study included 35,609 fluoroquinolone e-scripts from the preintervention period and 31,303 fluoroquinolone e-scripts from the postintervention period, accounting for 520,388 cumulative fluoroquinolone DOT. Mean durations before and after the intervention were 7.8 (SD, 4.3) and 7.7 (SD, 4.5), a nonsignificant change. E-scripts with a 10-day duration decreased prior to and after the default removal. The inpatient setting showed a significant 8% drop in 10-day e-scripts after default removal and a reduced median duration by 1 day; 10-day scripts declined nonsignificantly in ED and ambulatory settings. In the ambulatory settings, both 7- and 14-day e-script durations increased after default removal.
Conclusion:
Removal of default 10-day antibiotic durations did not affect overall mean duration but did shift patterns in prescribing, depending on practice setting. Stewardship interventions must be studied in the context of practice setting. Ambulatory stewardship efforts separate from inpatient programs are needed because interventions cannot be assumed to have similar effects.
- Type
- Original Article
- Information
- Copyright
- © The Author(s), 2024. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America
Footnotes
PREVIOUS PRESENTATION. The preliminary results of this study were presented at IDWeek 2018 on October 3–7, 2018, in San Francisco, California.
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Wrenn et al. supplementary material
Wrenn et al. supplementary material
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