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Antibiotic consumption measured by point prevalence surveys correlated better with monthly defined daily doses (DDD) than annual DDDs. This trend was observed in nonsurgical wards and on high-utilization wards, suggesting specific contexts influence antibiotic use measurement.

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Area of Science:

  • Health Services Research
  • Infectious Diseases
  • Pharmacy Practice

Background:

  • Accurate measurement of antibiotic consumption is crucial for antimicrobial stewardship programs.
  • Point prevalence surveys and defined daily doses (DDD) are common metrics for antibiotic utilization.
  • Understanding the correlation between these metrics is essential for effective antimicrobial stewardship.

Purpose of the Study:

  • To correlate antibiotic consumption data obtained from point prevalence surveys with defined daily doses (DDD) across multiple hospital settings.
  • To identify factors influencing the correlation between point prevalence survey data and DDD metrics.

Main Methods:

  • Antibiotic consumption was assessed using point prevalence surveys across various hospital wards.
  • Defined daily doses (DDD) were calculated for antibiotic utilization.
  • Correlation analyses were performed between point prevalence survey data and DDD, stratified by ward type (surgical vs. nonsurgical) and utilization level (high vs. low).

Main Results:

  • Point prevalence surveys showed a higher correlation with monthly DDD compared to annual DDD.
  • The correlation was stronger in nonsurgical wards than in surgical wards.
  • Higher correlation was observed on high-utilization wards compared to low-utilization wards.

Conclusions:

  • Point prevalence surveys provide a more accurate reflection of recent antibiotic consumption when correlated with monthly DDD.
  • The utility of point prevalence surveys for measuring antibiotic consumption may vary depending on the clinical setting, such as surgical versus nonsurgical wards.
  • Hospital-specific characteristics may influence the observed correlations, necessitating tailored approaches to antimicrobial stewardship.