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Related Experiment Videos

Methodological considerations in using claims databases to evaluate persistence with bisphosphonates for

Joyce A Cramer1, Stuart L Silverman, Deborah T Gold

  • 1Department of Psychiatry, Yale UniversitySchool of Medicine, 950 Campbell Avenue (151D), West Haven, CT 06516-2770, USA. joyce.cramer@yale.edu

Current Medical Research and Opinion
|August 23, 2007
PubMed
Summary

Retrospective medication persistence analyses, like those for bisphosphonates (BPs), need standardized methods for accuracy. Inconsistent definitions and varied approaches in studies highlight the need for clear protocols to improve clinical utility.

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Area of Science:

  • Pharmacoeconomics and Health Outcomes Research
  • Pharmacoepidemiology
  • Data Science in Healthcare

Background:

  • Retrospective medication persistence analyses are crucial for understanding treatment adherence and outcomes.
  • Bisphosphonates (BPs) present unique challenges due to diverse dosing regimens, impacting persistence analysis.
  • Existing studies often lack methodological consistency, limiting comparability and clinical utility.

Purpose of the Study:

  • To highlight the necessity of rigorous methodological approaches in retrospective medication persistence analyses.
  • To identify inconsistencies in current bisphosphonate (BP) persistence studies.
  • To advocate for standardized methods to enhance the accuracy and consistency of persistence data.

Main Methods:

  • Comparative analysis of published bisphosphonate (BP) persistence reports.
  • Evaluation of methodologies including data sources, follow-up duration, and allowed gaps in persistence definitions.
  • Assessment of result presentation and adjustments for demographic and clinical factors.

Main Results:

  • Significant variability in definitions and methods for bisphosphonate (BP) persistence was observed.
  • Persistence analyses differed notably in allowed gaps and adjustments for confounding factors.
  • Reported persistence for weekly BPs varied (179-249 days; 24-78% at 1 year), with monthly analyses complicated by diverse gap lengths (30-90 days).
  • Limitations included lack of efficacy thresholds, inadequate database information, and potential selection biases.

Conclusions:

  • Published studies reveal a critical need for standardized medication persistence analysis methods using claims databases.
  • Standardized analysis plans should define terms, detail methods, specify adjustments, and clarify allowed refill gaps.
  • Improved consistency in BP persistence analysis will enhance clinical utility and understanding of fracture risk impact.