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Cost-Effectiveness of Procalcitonin-Guided Antibiotic Therapy for Outpatient Management of Acute Respiratory Tract Infections in Adults

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A Capsule Commentary to this article was published on 20 December 2013

ABSTRACT

BACKGROUND

Two clinical trials suggest that procalcitonin-guided antibiotic therapy can safely reduce antibiotic prescribing in outpatient management of acute respiratory tract infections (ARTIs) in adults. Yet, it remains unclear whether procalcitonin testing is cost-effective in this setting.

OBJECTIVE

To evaluate the cost-effectiveness of procalcitonin-guided antibiotic therapy in outpatient management of ARTIs in adults.

DESIGN

Cost-effectiveness model based on results from two published European clinical trials, with all parameters varied widely in sensitivity analyses.

PATIENTS

Two hypothetical cohorts were modeled in separate trial-based analyses: adults with ARTIs judged by their physicians to require antibiotics and all adults with ARTIs.

INTERVENTIONS

Procalcitonin-guided antibiotic therapy protocols versus usual care.

MAIN MEASURES

Costs and cost per antibiotic prescription safely avoided.

KEY RESULTS

We estimated the health care system willingness-to-pay threshold as $43 (range $0–$333) per antibiotic safely avoided, reflecting the estimated cost of antibiotic resistance per outpatient antibiotic prescribed. In the cohort including all adult ARTIs judged to require antibiotics by their physicians, procalcitonin cost $31 per antibiotic prescription safely avoided and the likelihood of procalcitonin use being favored compared to usual care was 58.4 % in a probabilistic sensitivity analysis. In the analysis that included all adult ARTIs, procalcitonin cost $149 per antibiotic prescription safely avoided and the likelihood of procalcitonin use being favored was 2.8 %.

CONCLUSIONS

Procalcitonin-guided antibiotic therapy for outpatient management of ARTIs in adults would be cost-effective when the costs of antibiotic resistance are considered and procalcitonin testing is limited to adults with ARTIs judged by their physicians to require antibiotics.

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Acknowledgements

This study was supported by the National Institute of Allergy and Infectious Diseases (Grant No. R01AI076256), the National Institute of Health (T32 Grant No. AG21885) and the Doris Duke Charitable Foundation. This study has not previously been presented in part or in full at any prior conference.

Conflict of Interest

Dr. Zimmerman and Dr. Nowalk have a research grant from Merck to study the HPV vaccine.

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Correspondence to Constantinos I. Michaelidis BA.

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Michaelidis, C.I., Zimmerman, R.K., Nowalk, M.P. et al. Cost-Effectiveness of Procalcitonin-Guided Antibiotic Therapy for Outpatient Management of Acute Respiratory Tract Infections in Adults. J GEN INTERN MED 29, 579–586 (2014). https://doi.org/10.1007/s11606-013-2679-7

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  • DOI: https://doi.org/10.1007/s11606-013-2679-7

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