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Prescriptive variability of drugs by general practitioners.

Magda Bucholc1, Maurice O'Kane2, Siobhan Ashe2

  • 1Intelligent Systems Research Centre, University of Ulster, Magee Campus, Londonderry, Northern Ireland, United Kingdom.

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Prescription drug spending varies significantly between general practices. This study found increasing prescribing variability over time, influenced by practice setting and socioeconomic factors, highlighting potential areas for cost optimization.

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Area of Science:

  • Healthcare Management
  • Pharmaceutical Policy
  • General Practice Research

Background:

  • Prescription drug spending is a rapidly growing sector within healthcare.
  • Significant gaps exist in understanding prescribing patterns and costs across general practices.
  • Variability in prescribing may lead to suboptimal resource allocation and patient outcomes.

Purpose of the Study:

  • To examine temporal variations in prescription rates and costs among general practices.
  • To identify factors contributing to between-practice prescribing variability.
  • To explore the relationship between prescribing rates and costs.

Main Methods:

  • Analysis of prescription data from 55 GP surgeries in Northern Ireland.
  • Mann-Kendall test for temporal variability trends.
  • Interquartile range for outlier detection and Spearman's statistics for rate-cost relationships.

Main Results:

  • Significant between-practice differences in prescribing rates and costs were observed.
  • Outlier practices substantially contributed to overall prescribing variability.
  • Prescribing rates and costs showed an upward trend in variability over time.

Conclusions:

  • Practice setting and socioeconomic deprivation influence prescribing variability.
  • Rural practices exhibit higher variability than urban practices.
  • Further research is needed to identify all factors driving prescribing variations for potential intervention.