Predictors of drug prescription in nursing home residents: results from the INCUR study



Calcaterra, Laura, Proietti, Marco ORCID: 0000-0003-1452-2478, Saporiti, Edoardo, Nunziata, Vanessa, Rolland, Yves, Vellas, Bruno and Cesari, Matteo
(2022) Predictors of drug prescription in nursing home residents: results from the INCUR study. INTERNAL AND EMERGENCY MEDICINE, 17 (1). pp. 165-171.

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Abstract

Polypharmacy represents a major clinical and public health issue in older persons. We aimed to measure the prevalence of polypharmacy, and the main predictors of drug prescription in nursing home residents. Post hoc analyses of the "Incidence of pNeumonia and related ConseqUences in nursing home Residents" (INCUR) study were conducted. Polypharmacy was defined as the prescription of 5 or more drugs. A frailty index (FI) was computed according to the model proposed by Rockwood and Mitnitski using 36 health deficits, including diseases, signs, symptoms, and disabilities. Linear regression models were performed to identify the main predictors of the number of prescribed drugs. The INCUR study enrolled 800 patients (mean [SD] age 86.2 [4.1] years, 74.1% women). The mean number of medications prescribed at the baseline was 8.5 (SD 4.1). Prevalence of polypharmacy was found 86.4%. The mean FI was 0.38 (SD 0.10). A fully adjusted linear multivariate regression model found an inverse and independent association between age and number of prescribed drugs (beta - 0.07, 95% CI - 0.13, - 0.02; p = 0.005). Conversely, the FI was independently and positively associated with the number of medications (beta 4.73, 95% CI 1.17, 8.29; p = 0.009). The prevalence of polypharmacy is high among older persons living in nursing home. Age and FI are significantly associated with the number of drugs. The number of prescribed drugs tends to decrease with age, whereas a direct association with frailty is reported.

Item Type: Article
Uncontrolled Keywords: Older persons, Drugs, Polypharmacy, Frailty, Nursing homes
Divisions: Faculty of Health and Life Sciences
Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User: Symplectic Admin
Date Deposited: 26 Oct 2022 13:36
Last Modified: 18 Jan 2023 19:49
DOI: 10.1007/s11739-021-02841-6
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3165787