Evidence map›Paper›PMID 40437158›Full record

ArticleCommunications medicine2025

A multinational cohort study of trends in survival following dementia diagnosis.

Hao Luo, Marjaana Koponen, Christoph Roethlein, Cornelia Becker, J Simon Bell, Kebede Beyene, Yi Chai, Amy H Y Chan, Celine S L Chui, Britta Haenisch and 17 more

Abstract read
In one paragraph

Article in Communications medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Review
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4 · The record

Corrections and comments

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

27 authors.

Hao LuoSchool of Public Health Sciences, University of Waterloo, Waterloo, ON, Canada.ORCID http://orcid.org/0000-0003-4261-3414
Marjaana KoponenSchool of Pharmacy, University of Eastern Finland, Kuopio, Finland.
Christoph RoethleinGerman Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
Cornelia BeckerFederal Institute for Drugs and Medical Devices (BfArM), Bonn, Germany.
J Simon BellSchool of Pharmacy, University of Eastern Finland, Kuopio, Finland.
Kebede BeyeneSchool of Pharmacy, The University of Auckland, Auckland, New Zealand.ORCID http://orcid.org/0000-0002-1057-2593
Yi ChaiThe Hong Kong Jockey Club Centre for Suicide Research and Prevention, The University of Hong Kong, Hong Kong, China.ORCID http://orcid.org/0000-0002-9191-2341
Amy H Y ChanSchool of Pharmacy, The University of Auckland, Auckland, New Zealand.
Celine S L ChuiSchool of Nursing; School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
Britta HaenischGerman Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
Sirpa HartikainenSchool of Pharmacy, University of Eastern Finland, Kuopio, Finland.
Amy T HsuBruyère Research Institute, Ottawa, ON, Canada.
Jenni IlomakiCentre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia.
Ju Hwan KimSchool of Pharmacy, Sungkyunkwan University, Suwon, Gyeong gi‑do, South Korea.ORCID http://orcid.org/0000-0001-7253-6515
Martin KnappCare Policy and Evaluation Centre (CPEC), London School of Economics and Political Science, London, UK.
Elizabeth KunkelICES uOttawa, Ottawa, ON, Canada.
Edward Chia-Cheng LaiSchool of Pharmacy, Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Kui Kai LauDivision of Neurology, Department of Medicine, University of Hong Kong, Hong Kong, China.
Wallis C Y LauCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.ORCID http://orcid.org/0000-0003-2320-0470
Hyesung LeeSchool of Pharmacy, Sungkyunkwan University, Suwon, Gyeong gi‑do, South Korea.
Tzu-Chi LiaoSchool of Pharmacy, Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Terry Y S LumDepartment of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China.
Kenneth K C ManCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.ORCID http://orcid.org/0000-0001-8645-1942
Ju-Young ShinSchool of Pharmacy, Sungkyunkwan University, Suwon, Gyeong gi‑do, South Korea.
Anna-Maija TolppanenSchool of Pharmacy, University of Eastern Finland, Kuopio, Finland.ORCID http://orcid.org/0000-0001-9270-9268
Gloria H Y WongSchool of Psychology and Clinical Language Sciences, University of Reading, Reading, UK.ORCID http://orcid.org/0000-0002-1331-942X
Ian C K WongCentre for Safe Medication Practice and Research, Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China. wongick@hku.hk.ORCID http://orcid.org/0000-0001-8242-0014

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

abatract

backgroundInformation on the survival of people living with dementia over time and across systems can help policymakers understand the real-world impact of dementia on health and social care systems. This multinational cohort study examines the trends in relative mortality risk following a dementia diagnosis.

methodsA common protocol was applied to population-based data from the UK, Germany, Finland, Canada (Ontario), New Zealand, South Korea, Taiwan and Hong Kong. Individuals aged 60+ with an incident dementia diagnosis recorded between 2000 and 2018 were followed until death or the end of the study period. Cox proportional hazards regression was used to assess the association of mortality in dementia patients with the year of dementia diagnosis.

resultsData from 1,272,495 individuals, with the mean age at diagnosis ranging from 76.8 years (South Korea) to 82.9 years (Germany), show that the overall median length of survival following recorded diagnosis ranges from 2.4 years (New Zealand) to 7.9 years (South Korea). Hazard ratios (HRs) estimated from Cox proportional hazard models decline consistently over the study period in the UK, Canada, South Korea, Taiwan and Hong Kong, which accounted for 84% of all participants. For example, the HR decreases from 0.97 (95% CI: 0.92-1.02) in 2001 to 0.72 (0.65-0.79) in 2016 in comparison to year 2000 in the UK.

conclusionsThis study shows a steady trend of decreasing risk of mortality in five out of eight databases, which signals the potential positive effect of dementia plans and associated policies and provides reference for future policy evaluation.

Identifiers

PMID40437158
PMCPMC12120012

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.