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Updated: Jun 11, 2026

Diagonal Method to Measure Synergy Among Any Number of Drugs

Diagonal Method to Measure Synergy Among Any Number of Drugs

Published on: June 21, 2018

Polypharmacy in general practice.

Kirsten Schaefer¹, Henrik Maerkedahl, Hans Okkels Birk

¹Quality & Development, Region Zealand. kgs@regionsjaelland.dk

Danish Medical Bulletin

|July 2, 2010

Summary

This summary is machine-generated.

Major polypharmacy (MPP), affecting 2.1% of the population, often involves medications lacking clear indications. Auditing patient prescriptions is crucial for improving medication management and patient safety.

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Area of Science:

Gerontology
Clinical Pharmacy
Public Health

Background:

Polypharmacy poses significant risks, including adverse drug events and interactions.
Quantifying the prevalence of major polypharmacy (MPP) is essential for understanding its impact on healthcare systems.
A quality improvement project was initiated to address MPP in a Danish county.

Purpose of the Study:

To determine the prevalence of major polypharmacy (MPP) in Roskilde County, Denmark.
To assess the quality of medication management for patients with MPP.
To evaluate the feasibility of a quality improvement project involving general practitioners (GPs).

Main Methods:

Prospective registry study of subsidized drug prescriptions in Roskilde County (Q3 2005).
Inclusion of 236,000 inhabitants.
Audit of medications for 220 MPP patients selected by participating GPs.

Main Results:

MPP patients represented 2.1% of the county's population.
GPs showed significant engagement in prescription auditing.
A substantial proportion of audited patients were on medications with outdated or questionable indications.

Conclusions:

Major polypharmacy challenges GPs' medication management capabilities.
Systematic auditing of comprehensive patient medication lists is recommended.
Implementing structured medication reviews can mitigate risks associated with polypharmacy.