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BMC Geriatrics

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Open Access 01-12-2019 | Research article

Measuring multimorbidity in older adults: comparing different data sources

Authors: Samantha Gontijo Guerra, Djamal Berbiche, Helen-Maria Vasiliadis

Published in: BMC Geriatrics | Issue 1/2019

Abstract

Background

Multimorbidity is a global health issue, particularly for older adults in the primary care setting. An adequate portrayal of its epidemiology is essential to properly identify and understand the health care needs of this population. This study aimed to compare the differences in the prevalence of selected chronic conditions and multimorbidity, including its associated characteristics, using health survey/self-reported (SR) information only, administrative (Adm) data only and the combined (either) sources.

Methods

This was a secondary analysis of survey data from the first cycle of the Longitudinal Survey on Senior’s Health and Health Services Use linked to health-Adm data. The analytical sample consisted of 1625 community-dwelling older adults (≥65 years) recruited in the waiting rooms of primary health clinics in a selected administrative region of the province of Quebec. Seventeen chronic conditions were assessed according to two different data sources. We examined the differences in the observed prevalence of chronic conditions and multimorbidity and the agreement between data sources.

Results

The prevalence of each of the 17 chronic conditions ranged from 1.2 to 68.7% depending on the data source. The agreement between different data sources was highly variable, with kappa coefficients (κ) ranging from 0.05 to 0.73. Multimorbidity was very high in this population, with an estimated prevalence of up to 95.9%. In addition, we found that the association between sociodemographic and behavioural factors and the presence of multimorbidity varied according to the different data sources and thresholds.

Conclusions

This is the first study to simultaneously investigate chronic conditions and multimorbidity prevalence among primary care older adults using combined SR and health-Adm data. Our results call attention to (1) the possibility of underestimating cases when using a single data source and (2) the potential benefits of integrating information from different data sources to increase case identification. This is an important aspect of characterizing the health care needs of this fast-growing population.

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Title: Measuring multimorbidity in older adults: comparing different data sources
Authors: Samantha Gontijo Guerra
Djamal Berbiche
Helen-Maria Vasiliadis
Publication date: 01-12-2019
Publisher: BioMed Central
Published in: BMC Geriatrics / Issue 1/2019
Electronic ISSN: 1471-2318
DOI: https://doi.org/10.1186/s12877-019-1173-4

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