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Published in: BMC Geriatrics 1/2021

Open Access 01-12-2021 | Research

Development of a multivariable prognostic PREdiction model for 1-year risk of FALLing in a cohort of community-dwelling older adults aged 75 years and above (PREFALL)

Authors: Gustav Valentin Gade, Martin G. Jørgensen, Jesper Ryg, Tahir Masud, Lasse Hjort Jakobsen, Stig Andersen

Published in: BMC Geriatrics | Issue 1/2021

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Abstract

Background

Falls are the leading cause of fatal and non-fatal injuries in older adults, and attention to falls prevention is imperative. Prognostic models identifying high-risk individuals could guide fall-preventive interventions in the rapidly growing older population. We aimed to develop a prognostic prediction model on falls rate in community-dwelling older adults.

Methods

Design: prospective cohort study with 12 months follow-up and participants recruited from June 14, 2018, to July 18, 2019.
Setting: general population.
Subjects: community-dwelling older adults aged 75+ years, without dementia or acute illness, and able to stand unsupported for one minute.
Outcome: fall rate for 12 months.
Statistical methods: candidate predictors were physical and cognitive tests along with self-report questionnaires. We developed a Poisson model using least absolute shrinkage and selection operator penalization, leave-one-out cross-validation, and bootstrap resampling with 1000 iterations.

Results

Sample size at study start and end was 241 and 198 (82%), respectively. The number of fallers was 87 (36%), and the fall rate was 0.94 falls per person-year. Predictors included in the final model were educational level, dizziness, alcohol consumption, prior falls, self-perceived falls risk, disability, and depressive symptoms. Mean absolute error (95% CI) was 0.88 falls (0.71–1.16).

Conclusion

We developed a falls prediction model for community-dwelling older adults in a general population setting. The model was developed by selecting predictors from among physical and cognitive tests along with self-report questionnaires. The final model included only the questionnaire-based predictors, and its predictions had an average imprecision of less than one fall, thereby making it appropriate for clinical practice. Future external validation is needed.

Trial registration

Clinicaltrials.gov (NCT03608709).
Appendix
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Metadata
Title
Development of a multivariable prognostic PREdiction model for 1-year risk of FALLing in a cohort of community-dwelling older adults aged 75 years and above (PREFALL)
Authors
Gustav Valentin Gade
Martin G. Jørgensen
Jesper Ryg
Tahir Masud
Lasse Hjort Jakobsen
Stig Andersen
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Geriatrics / Issue 1/2021
Electronic ISSN: 1471-2318
DOI
https://doi.org/10.1186/s12877-021-02346-z

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