Evidence map›Paper›PMID 33595148›Full record

ArticleHaemophilia : the official journal of the World Federation of Hemophilia2021

Evidence of a disability paradox in patient-reported outcomes in haemophilia.

Jamie O'Hara, Antony P Martin, Diane Nugent, Michelle Witkop, Tyler W Buckner, Mark W Skinner, Brian O'Mahony, Brendan Mulhern, George Morgan, Nanxin Li and 1 more

Abstract read
In one paragraph

Article in Haemophilia : the official journal of the World Federation of Hemophilia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
–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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  7. Disability, Quality of Life, and Vitalism in End-of-Life Care.HEC forum : an interdisciplinary journal on hospitals' ethical and legal issues · 2025
    Article
  8. Treatment and Disease Burden in a Cohort of People With Haemophilia Without Inhibitors in the United States.Haemophilia : the official journal of the World Federation of Hemophilia · 2025
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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

11 authors.

Jamie O'HaraHCD Economics, Daresbury, UK.
Antony P MartinHCD Economics, Daresbury, UK.
Diane NugentDepartment of Pediatrics and Division of Hematology at CHOC Children's Hospital, Center for Inherited Blood Disorders, Orange, CA, USA.
Michelle WitkopNational Hemophilia Foundation, New York, NY, USA.ORCID https://orcid.org/0000-0003-0758-286X
Tyler W BucknerHemophilia and Thrombosis Center, University of Colorado School of Medicine, Aurora, CO, USA.
Mark W SkinnerInstitute for Policy Advancement, Ltd, Washington, DC, USA.ORCID https://orcid.org/0000-0002-0934-0680
Brian O'MahonyIrish Haemophilia Society, Dublin, UK.
Brendan MulhernCentre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, NSW, Australia.
George MorganHCD Economics, Daresbury, UK.ORCID https://orcid.org/0000-0003-2014-3415
Nanxin LiuniQure Inc, Lexington, MA, USA.
Eileen K SawyeruniQure Inc, Lexington, MA, USA.

Funding

uniQure Inc.
6 · The paper itself

Abstract

introductionPeople with inherited and long-term conditions such as haemophilia have been shown to adapt to their levels of disability, often reporting better quality of life (QoL) than expected from the general population (the disability paradox).

aimTo investigate the disability paradox in people with haemophilia in the United States by examining preference differences in health state valuations versus the general population.

methodsWe conducted a discrete choice experiment including duration to capture valuations of health states based on patient-reported preferences. Participants indicated their preferences for hypothetical health states using the EQ-5D-5L, where each participant completed 15 of the 120 choice tasks. Response inconsistencies were evaluated with dominated and repeated scenarios. Conditional-logit regressions with random sampling of the general population responses were used to match the sample of patients with haemophilia. We compared model estimates and derived preferences associated with EQ-5D-5L health states.

resultsAfter removing respondents with response inconsistencies, 1327/2138 (62%) participants remained (177/283 haemophilia; 1150/1900 general population). Patients with haemophilia indicated higher preference value for 99% of EQ-5D-5L health states compared to the general population (when matched on age and gender). The mean health state valuation difference of 0.17 indicated a meaningful difference compared to a minimal clinically important difference threshold of 0.07. Results were consistent by haemophilia type and severity.

conclusionOur findings indicated the presence of a disability paradox among patients with haemophilia, who reported higher health states than the general population, suggesting the impact of haemophilia may be underestimated if general population value sets are used.

Indexed as

Hemophilia AQuality of LifeHealth StatusHumansPatient Reported Outcome MeasuresSurveys and Questionnairescost-effectivenesshaemophiliahealth equitypatient-reported outcome measurementquality of life

Identifiers

PMID33595148
PMCPMC8048516

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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.