Evidence map›Paper›PMID 42698057›Full record

ArticlePharmacoEconomics2026

Developing a Quality-of-Life Measure for Carers of People with Dementia for Use in Economic Evaluations: Results from the COCOON Project.

Lidia Engel, Briony Dow, Anne Muldowney, Cathrine Mihalopoulos, Julie Ratcliffe, Mark Yates, Rosemary Cameron, Irene Jones, Nikki McCaffrey

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Article in PharmacoEconomics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Lidia EngelSchool of Public Health and Preventive Medicine, Faculty of Medicine Nursing and Health Sciences, Monash University, Level 4, 553 St. Kilda Road, Melbourne, VIC, 3004, Australia. lidia.engel@monash.edu.ORCID http://orcid.org/0000-0002-7959-3149
Briony DowNational Ageing Research Institute (NARI), Melbourne, VIC, Australia.
Anne MuldowneyOlder Persons Advocacy Network (OPAN), Surry Hills, NSW, Australia.
Cathrine MihalopoulosSchool of Public Health and Preventive Medicine, Faculty of Medicine Nursing and Health Sciences, Monash University, Level 4, 553 St. Kilda Road, Melbourne, VIC, 3004, Australia.
Julie RatcliffeCollege of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia.
Mark YatesBallarat Clinical School, School of Medicine, Faculty of Health, Deakin University, Melbourne, VIC, Australia.
Rosemary CameronLived Experience Expert, Melbourne, VIC, Australia.
Irene JonesLived Experience Expert, Melbourne, VIC, Australia.
Nikki McCaffreySchool of Health and Social Development, Institute for Health Transformation, Deakin Health Economics, Deakin University, Melbourne, VIC, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveProviding informal care to a person with dementia can substantially affect carers' quality of life. Existing generic preference-weighted measures (e.g. EQ-5D-5L) may not fully capture the caring experience, while carer-specific measures (e.g. CarerQol), although preference weighted, cannot be used to derive quality-adjusted life-years for cost-utility analysis. The COCOON project aimed to develop a new preference-weighted quality-of-life measure for carers of people living with dementia that is suitable for cost-utility analysis.

methodsDevelopment of the descriptive system was informed by: (1) a literature review; (2) qualitative interviews with carers of people with dementia to assess face validity of candidate items; (3) an online survey of carers to evaluate psychometric performance (including missing data, distributions, known-group validity, convergent validity, exploratory factor analysis and item response theory analysis); and (4) consultation with an advisory group.

resultsAn initial pool of 60 candidate items was reduced to 44 items for qualitative testing. Following interviews, the item set was refined to 35 items. Based on psychometric analyses and final advisory group consultation, the final descriptive system comprised seven items: emotional health, physical health, loss and grief, loss of freedom, loneliness, support and financial burden. Each item is measured using a five-point frequency scale from 'never' to 'always'.

conclusionsThe COCOON measure is grounded in the lived experiences of carers of people living with dementia, capturing the multidimensional facets of dementia caregiving and offers a conceptually robust and policy-relevant measure for assessing carers' quality of life in economic evaluations.

Identifiers

PMID42698057

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