Use of antipsychotic drugs among residents with dementia in European long-term care facilities: results from the SHELTER study

Abstract

Background: Behavioral and psychological symptoms of dementia (BPSD) are common reasons for use of antipsychotic drugs among older individuals with dementia. These drugs are not approved for such use and both the Food and Drug Administration and European Medicines Agency have issued warnings to limit such use.

Objectives: This study aimed to describe patterns of antipsychotic drug use in a sample of nursing home residents with dementia in 7 European countries and Israel.

Design: This cross-sectional, retrospective cohort study used data from the SHELTER study that collected comprehensive resident data using the interRAI Long-Term Care Facility instrument.

Methods: Fifty-seven long-term care facilities participated from 8 countries, and the sample included 4156 long-term care residents from these settings. Individuals with dementia, both Alzheimer and non-Alzheimer types, were identified. Potential correlates of any antipsychotic and atypical versus conventional antipsychotic drug use among residents with dementia were identified using generalized estimation equation modeling.

Results: A total of 2091 individuals with dementia were identified. Antipsychotic drug use among these individuals varied by country, with overall prevalence of use being 32.8% (n = 662). Among antipsychotic users, 7 in 10 were receiving atypical agents. Generalized estimation equation analysis revealed that the strongest correlate of any antipsychotic drug use was severe behavioral symptoms, which increased the likelihood by 2.84. Correlates of atypical versus conventional antipsychotic drug use included psychiatric services, more than 10 medications, moderate behavioral symptoms, and female gender.

Conclusion: Despite recommendations to avoid the use of antipsychotic drugs in patients with dementia, a large proportion of residents in European long-term care facilities continue to receive such agents. Future work should not only establish the appropriateness of such use through outcomes studies, but explore withdrawal strategies as well as alternative treatment modalities.

Keywords: Nursing homes; antipsychotic drugs; dementia.