Abstract
Objective
To estimate the frequency of potentially inappropriate medication use among community-dwelling elderly subjects and to identify socio-demographic factors associated with this use.
Methods
Data were collected in the Three-City Study, a French longitudinal study on vascular factors and cognitive decline. The study population was composed of 9,294 subjects aged 65 years and older, living in the community. Inappropriate medication use was assessed using a list derived from the Beers criteria by a panel of French experts.
Results
Nearly 40% of the participants used at least one potentially inappropriate medication: 23.4% used cerebral vasodilators, 9.2% long-acting benzodiazepines and 6.4% drugs with anticholinergic properties. Excluding cerebral vasodilators from the list, the frequency of potentially inappropriate medication use was 21.7%. This use was significantly more frequent among women, older subjects and poorly educated subjects. Adjusted analyses showed that these associations could not be explained by a confounding effect of medical factors. Compared with 13.0% of men with a high educational level, 27.9% of women with a low educational level used at least one potentially inappropriate medication (odds ratio=2.0; 95% confidence interval: 1.7–2.3).
Conclusion
This study is the first attempt to evaluate the frequency of potentially inappropriate medication use in the elderly French population. Female gender and low socio-economic characteristics reduced the chances of receiving optimal pharmacotherapy. The proportion of elderly subjects receiving potentially inappropriate medication was higher than shown in previous studies. This is mainly explained by differences in the use of cerebral vasodilators.
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Acknowledgements
We acknowledge the following persons for serving on our expert panel: Pr. Jean Doucet (Centre Hospitalier Universitaire Bois Guillaume, Service de Gériatrie, Rouen, France), Dr. Jean-Marie Vétel (Centre Hospitalier Universitaire du Mans, Service de Gérontologie Clinique, Le Mans, France), Dr. Gilles Berrut (Hôpital d’Angers, Service de Gérontologie, Angers, France), Pr. Régis Gonthier (Hôpital de la Charité, Service de Gériatrie, Saint-Etienne, France), Pr. Jacques Massol (Masson, La Presse Médicale, Paris, France), Pr. Michel Andréjack (Centre Hospitalier Universitaire d’Amiens, Service de Pharmacologie, Amiens, France), Pr. Louis Merle (Centre Hospitalier Universitaire de Limoges, Centre de Pharmacovigilance, Limoges, France), Dr. Claudine Soubrie (Hôpital de la Salpêtrière, Centre de Pharmacovigilance, Paris, France), Dr. Ghada Miremont-Salamé (Centre Hospitalier Universitaire Pellegrin, Centre de Pharmacovigilance, Bordeaux, France).
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Appendix
The 3C study group
Scientific Committee: A. Alpérovitch (principal investigator), P. Amouyel, J.F. Dartigues (co-principal investigator), P. Ducimetière, B. Mazoyer, K. Ritchie, C. Tzourio. Coordination and Data Management: C. Dufouil, M. Gautier, S. Artero, C. Helmer, A. Fourrier, A. Alpérovitch. Blood Specimen and DNA bank: P. Amouyel, P. Gambert, N. Fiévet, A. Dupuy. Ultrasound Investigations: M. Zureik, D. Courbon, J. Gariépy, A. Simon, P. Ducimetière. MRI Database: F. Crivello, N. Delcroix, C. Dufouil, P. Guillon, B. Mazoyer, C. Tzourio.
3C-Bordeaux Investigators: J.F. Dartigues (principal investigator), P. Barberger-Gateau, C. Fabrigoule, C. Helmer, L. Letenneur, H. Amieva. Study Staff: V. Cressot, V. Chrysostome, T. Gaida, S. Larrieu, K. Pérès, C. Sourgen. 3C-Dijon Investigators: C. Tzourio (principal investigator), C. Dufouil, A. Elbaz, M. Gautier, M.Giroud. Study Staff: B. Tavernier and B. Février (local coordinators), E. Boiget, L. Charles, C. Desbrosses, S. Gomar, A. Lenoir, M. Maurage, M.P. Monin, J. Rénier. 3C-Montpellier Investigators: K. Ritchie (principal investigator), J. Touchon, F. Portet, M.L. Ancelin, C. Berr, A. Besset, B. Moulard. Study Staff: L. Touati, L. Brissaud, M. Deusy, I. Beluche, M. Renaudin, M.C. Lorenzini, F. Jourdan, J. Norton.
Partnership and supports
The 3C Study was conducted under a partnership agreement between the Institut National de la Santé et de la Recherche Médicale (INSERM), the University Victor Segalen Bordeaux 2. The Fondation pour la Recherche Médicale funded the preparation and initiation of the study.
The 3C Study was also supported by the Caisse Nationale Maladie des Travailleurs Salariés, Direction Générale de la Santé, MGEN, Institut de la Longévité, Agence Française de Sécurité Sanitaire des Produits de Santé, Conseils Régionaux of Aquitaine and Bourgogne, Fondation de France, Ministry of Research - INSERM Programme “Cohortes et collections de données biologiques”.
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Lechevallier-Michel, N., Gautier-Bertrand, M., Alpérovitch, A. et al. Frequency and risk factors of potentially inappropriate medication use in a community-dwelling elderly population: results from the 3C Study. Eur J Clin Pharmacol 60, 813–819 (2005). https://doi.org/10.1007/s00228-004-0851-z
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DOI: https://doi.org/10.1007/s00228-004-0851-z