Evidence map›Paper›PMID 42156142›Full record

ArticleBMJ open2026

Global Healthcare Study on Psoriasis (GHSP): cohort profile and first findings.

Julia-Tatjana Maul, Fabienne Fröhlich, Mia-Louise Nielsen, Lara Valeska Maul, Tiago Torres, Jacob P Thyssen, April Armstrong, Hazel H Oon, Mei Ji, Xiaojing Kang and 14 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMJ open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

24 authors.

Julia-Tatjana MaulDepartment of Dermatology and Venereology, University of Zurich, Zurich, Switzerland Julia-Tatjana.Maul@usz.ch.ORCID http://orcid.org/0000-0002-9914-1545
Fabienne FröhlichDepartment of Dermatology and Venereology, University of Zurich, Zurich, Switzerland.
Mia-Louise NielsenDepartment of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark.
Lara Valeska MaulDepartment of Dermatology and Venereology, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0001-9202-0073
Tiago TorresDepartment of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal.
Jacob P ThyssenDepartment of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark.
April ArmstrongDepartment of Dermatology, University of California, Los Angeles, California, USA.
Hazel H OonNational Skin Centre and Skin Research Institute of Singapore (SRIS), Lee Kong Chian School of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Mei JiDepartment of Dermatology, Fengxian Institute of Dermatosis and Prevention and Treatment, Shanghai, People's Republic of China.
Xiaojing KangDepartment of Dermatology and Venereology, People's Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Clinical Research Center For Dermatologic Diseases, Xinjiang Key Laboratory of Dermatology Research, Urumqi, People's Republic of China.
Fernando ValenzuelaDepartment of Dermatology, University of Chile, Santiago, Chile.
Richardo RomitiDepartment of Dermatology, University of Sao Paulo, Sao Paulo, Brazil.
André V E de CarvalhoHospital Moinhos de Vento, Porto Alegre, Brazil.
Farah NovoaDepartment of Dermatology, Jockey Salud Medical Center, Lima, Peru.ORCID http://orcid.org/0009-0008-6663-1063
Marco SousaDepartment of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal.
Martim LuzDepartment of Dermatology, Centro Hospitalar Universitário do Porto, Porto, Portugal.
Bryan Edgar K GuevaraDepartment of Dermatology, Southern Philippines Medical Center, Davao City, Philippines.
Nejib DossGolden Towers Médical Centre, Tunis, Tunisia.
Paulo GisondiSection of Dermatology and Venereology, Department of Medicine, University of Verona, Verona, Italy.
Leena ChularojanamontriDepartment of Dermatology, Faculty of Medicine, Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkok Noi, Bangkok, Thailand.
Thomas M KündigDepartment of Dermatology and Venereology, University of Zurich, Zurich, Switzerland.
Alexander EgebergDepartment of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark.ORCID http://orcid.org/0000-0001-8257-1816
Simon Francis ThomsenDepartment of Dermatology, Bispebjerg Hospital, Copenhagen, Denmark.
Johannes A DidaskaluFaculty of Medicine, University of Zürich, Zürich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDespite the intention of international psoriasis treatment guidelines to cover all patients globally, disparities persist in the availability and accessibility of adequate therapy in many countries. The Global Healthcare Study on Psoriasis (GHSP) aims to study patient characteristics, disease impact, treatment accessibility and healthcare systems worldwide. This study provides a description and data analysis of 22 countries.

participantsThe GHSP cohort was initiated in 2020, and the number of recruiting centres has gradually grown. Participants are recruited by dermatologists at reference centres worldwide. Data are collected using a standardised assessment questionnaire comprising 88 items, administered by trained experts. FINDINGS TO DATE: By 26 October 2024, cross-sectional data had been collected from 3950 psoriasis patients at 130 reference centres in 22 countries on six continents. The majority (55.7%) of patients were male, and the median (IQR) body mass index was 26.5 (23.7-30.1) kg/m FUTURE PLANS: By identifying inequalities, special patient populations and country-specific differences, the GHSP will guide the development of strategies to enhance psoriasis care on a global level. Future directions include expanding the study to additional countries and sites worldwide, while transitioning into a long-term global registry of skin diseases, including atopic dermatitis and hidradenitis suppurativa, termed 'Global Healthcare Registry on Skin Diseases'.

Indexed as

Global HealthHealth Services AccessibilityPsoriasisAdultAgedCross-Sectional StudiesFemaleHumansMaleMiddle AgedQuality of LifeSeverity of Illness IndexSurveys and QuestionnairesAdult dermatologyDermatological epidemiologyPsoriasis

Identifiers

PMID42156142
PMCPMC13202043

What OpenQuestion holds

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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.