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Measuring multimorbidity in research: Delphi consensus study
Iris S S Ho1, Amaya Azcoaga-Lorenzo2, Ashley Akbari3
1Usher Institute, University of Edinburgh, Edinburgh Medical School, Edinburgh, UK.
Multimorbidity is defined as two or more long-term conditions. This international consensus provides guidance for consistent measurement in research, improving study comparability and reproducibility.
Area of Science:
- Gerontology and Public Health
- Clinical Research Methodology
Background:
- Multimorbidity research faces challenges due to inconsistent definitions and measurement approaches.
- Lack of standardized methods hinders comparability and reproducibility of studies.
Purpose of the Study:
- To establish international consensus on the definition and measurement of multimorbidity for research.
- To develop standardized guidance for consistent multimorbidity research.
Main Methods:
- A Delphi consensus study involving professional and public panels.
- Data collected through three online survey rounds between November 2020 and May 2021.
Main Results:
- Consensus reached: multimorbidity defined as two or more long-term conditions.
- Agreement on criteria for including conditions in measures (active, permanent, requiring treatment, surveillance, or ongoing care).
- Consensus on 24 'always include' and 35 'usually include' conditions; simple counts preferred for prevalence, weighted measures for risk adjustment.
Conclusions:
- This Delphi study provides consensus guidance for defining and measuring multimorbidity.
- The findings aim to enhance consistency, comparability, and reproducibility in multimorbidity research.
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