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Relationship between polypharmacy and underprescribing

Open access
Kuijpers, Mascha A. J., Van Marum, Rob J., Egberts, Antoine C. G., Jansen, Paul A. F., The OLDY (OLd people Drugs & dYsregulations) study group·2008·British Journal of Clinical Pharmacology

Abstract

WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT • Polypharmacy is common among the elderly. • Underprescribing is also frequent. • Optimizing polypharmacy includes avoiding underprescription. WHAT THIS STUDY ADDS • The probability of underprescription increases with the number of drugs used. • Forty‐three % of patients who used five or more medicines are undertreated. • In undertreated patients a mean of 1.4 medicines were lacking. AIMS: Underprescribing is increasingly recognized as an important problem. The aim of this study was to determine the relationship between polypharmacy and underprescribing. METHODS: Treatment of current medical problems in geriatric patients was compared with general practitioner and national guidelines. Underprescription was defined as lack of an indicated drug, while no reason could be found for not prescribing it. Polypharmacy was defined as five or more drugs. RESULTS: Polypharmacy was present in 61% of 150 patients. Underprescription was found in 47 (31%). Of patients with polypharmacy 42.9% were undertreated, in contrast to 13.5% of patients using four medicines or less (OR 4.8, 95% CI 2.0, 11.2). The estimated probability of underprescription increased significantly with the number of drugs. CONCLUSIONS: We found a clear relationship between polypharmacy and underprescribing.

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Crossref · 10.1111/j.1365-2125.2007.02961.x

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Metadata

Authors
Kuijpers, M. A. J., Van Marum, R. J., Egberts, A. C. G., Jansen, P. A. F., & The OLDY (OLd people Drugs & dYsregulations) study group
Venue
British Journal of Clinical Pharmacology
Publisher
Wiley
Published
2007-12-14
Volume
65
Issue
1
Pages
130-133
ISSN
  • 0306-5251 (ISSN-L)
  • 1365-2125
OpenAlex
W2171692026
Cited by
253
References
1
FWCI
4.99
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Relationship between polypharmacy and underprescribing. https://app.cochat.ai/papers/10.1111/j.1365-2125.2007.02961.x
The paper
Kuijpers, M. A. J., Van Marum, R. J., Egberts, A. C. G., Jansen, P. A. F., & The OLDY (OLd people Drugs & dYsregulations) study group. (2008). Relationship between polypharmacy and underprescribing. British Journal of Clinical Pharmacology. https://doi.org/10.1111/j.1365-2125.2007.02961.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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