John Brodersen
Job description
Professor ved Allmennmedisinsk Forskningsenhet AFE Nord.
Ansvarlig for Forskningsnetværket om overdiagnostik i helsetjenesten
Mathias,
Jessica A,
Frederikke,
Dagny,
Volkert,
John
:
Short term complications of conisation and long term effects on fertility related outcomes in Denmark: register based nationwide cohort study
The BMJ 2025 DOI
Kieran,
Kristine,
Volkert,
Alexandra Brandt Ryborg,
Eddie,
David
et al.:
The Multimorbidity Questionnaire (MMQ1): English translation and validation of a Danish patient reported outcome measure for quality of life in people with multiple long-term conditions in a cross-sectional survey
Quality of Life Research 2025 DOI
Anne,
Anna Bernhardt,
Sussi Friis,
Kristine,
Jette Kolding,
Anne
et al.:
Development of a PROM to measure patient-centredness in chronic care consultations in primary care
Health and Quality of Life Outcomes 2025 DOI
Katharina,
Sophie,
Ebru,
Anne,
John,
Christian
:
The Holm and Cordoba Urinary Tract Infection Score: Translation, Linguistic and Content Validation of the German Version of a Patient-Reported Outcome Measure to Assess Symptoms, Bothersomeness and Impact of Uncomplicated Urinary Tract Infections in Women
Neurourology and Urodynamics 2025 DOI
Sigrid Moesgaard,
Nanna Holt,
Bolette,
John,
Ásthildur
:
How to approach sustainability in general practice: a workshop experience with a qualitative analysis amongst general practitioners in Denmark
Scandinavian Journal of Public Health 2025 DOI
Hana,
Dianne M.,
Christian F.,
John,
Michael,
Saveen
et al.:
English Translation and Cultural Adaptation of the Knee Numeric-Entity Evaluation Score (KNEES-ACL): A Condition-Specific Patient-Reported Outcome Measure for Anterior Cruciate Ligament Injuries
American Journal of Sports Medicine 2024 DOI
Christina Sadolin,
Mette Bech,
John,
Alexandra Brandt Ryborg
:
Rethinking the logic of early diagnosis in cancer
James,
Brooke,
Kirsten,
Timothy J.,
Jenna,
Farzaneh
et al.:
Impact of the diagnostic label for a low-risk prostate lesion: protocol for two online factorial randomised experiments
Christina Sadolin,
Mette Bech,
John,
Alexandra Brandt Ryborg
:
Reply: How do we avoid polarization of interdisciplinary research on cancer diagnosis?
Frederik Handberg Juul,
Anne Katrine Lykke,
Christian Patrick,
Or Joseph,
Sigrid Brisson,
Emma Grundtvig
et al.:
Deaths and cardiopulmonary events following colorectal cancer screening—A systematic review with meta-analyses
Christina Sadolin,
John,
Gunnar Lauge
:
Diagnostic flow for all patients referred with non-specific symptoms of cancer to a diagnostic centre in Denmark: A descriptive study
Christine,
Volkert,
Margit,
Tora Grauers,
Catrine,
John
et al.:
Time trends in mortality for people with severe mental illness in Denmark 2000–2018
Nordic Journal of Psychiatry 2024 DOI
Asha,
John,
Volkert,
Katharine,
Henry M.,
Daniel
et al.:
Validation of the psychosocial consequences of screening in lung cancer questionnaire in the international lung screen trial Australian cohort
Anne,
Anna Bernhardt,
Maarten,
Sussi Friis,
Tora Grauers,
Anders
et al.:
Effectiveness of an adaptive, multifaceted intervention to enhance care for patients with complex multimorbidity in general practice: protocol for a pragmatic cluster randomised controlled trial (the MM600 trial)
Alexandra Brandt Ryborg,
John,
Susanne,
Christina,
Anne,
Marius Brostrøm
:
General practitioners’ experiences of providing somatic care for patients with severe mental illness: a qualitative study
Katharina,
Sophie,
Anne,
John,
Christian
:
Content Validity and Psychometric Properties of the German Version of the Holm and Cordoba Urinary Tract Infection Score for Uncomplicated Urinary Tract Infections in Women: Protocol for a Validation Study
Emma Grundtvig,
John,
Cæcilie,
Kristen,
Jenna,
Alexandra Brandt Ryborg
:
Fictitious cases as a methodology to discuss sensitive health topics in focus groups
Katrine,
Alexandra Brandt Ryborg,
Tina,
Volkert,
John,
Kristine
et al.:
The SOFIA pilot study: assessing feasibility and fidelity of coordinated care to reduce excess mortality and increase quality of life in patients with severe mental illness in a general practice setting; a cluster-randomised pilot trial
Alexandra Brandt Ryborg,
F.H.J.,
M.K.,
John,
T.D.,
M.H.
et al.:
Introducing extended consultations for patients with severe mental illness in general practice: Results from the SOFIA feasibility study
Mille Falk,
Emma Grundtvig,
John
:
Overdiagnosis in malignant melanoma: a scoping review
BMJ Evidence-Based Medicine 2023 DOI
Camilla Aakjær,
John,
Ole,
Annette Sofie,
Martin Bach
:
Factors affecting point-of-care ultrasound implementation in general practice: A survey in Danish primary care clinics
Dina Melanie,
Susanne Oksbjerg,
Cecilie Lindström,
Pernille,
John,
Elizabeth
:
Barriers and facilitators to national guideline implementation for palliative cancer care in a Danish cross-sectoral healthcare setting: A qualitative study of healthcare professionals' experiences
Søren K.,
Frederikke G.,
Torsten B.,
Thomas,
Jens F.,
Trine
et al.:
Patients With Hypertrophic Cardiomyopathy and Normal Genetic Investigations Have Few Affected Relatives
Journal of the American College of Cardiology 2023 DOI
Christoffer Bjerre,
Margaret,
John,
Torsten,
Klaus
:
Data driven or data informed? How general practitioners use data to evaluate their own and colleagues’ clinical work in clusters
Alexandra Brandt Ryborg,
John
:
Klimaaftryk af overdiagnostik
Ugeskrift for Læger 2023 ARKIV
Emma Grundtvig,
Alexandra Brandt Ryborg,
John,
Christina Sadolin
:
Questioning ‘Informed Choice’ in Medical Screening: The Role of Neoliberal Rhetoric, Culture, and Social Context
Emma G.,
Sigrid W.,
John,
Alexandra Brandt Ryborg
:
Women's experiences of age-related discontinuation from mammography screening: A qualitative interview study
Christoffer Bjerre,
Rola,
Margaret,
John,
Torsten,
Klaus
:
Data as symptom: Doctors’ responses to patient-provided data in general practice
Isabella Skaarup,
Frederik Handberg Juul,
Emma Grundtvig,
Anne Katrine Lykke,
Christian Patrick,
Or Joseph
et al.:
The risk of bleeding and perforation from sigmoidoscopy or colonoscopy in colorectal cancer screening: A systematic review and meta-analyses
Emma Grundtvig,
Túlia Filipa Roberto,
Bruno,
Volkert,
Jessica á,
John
:
The long-term psychosocial consequences of screen-detected ductal carcinoma in situ and invasive breast cancer
Olsi,
Charlotte Vestrup,
Torsten,
Eric,
John
:
Lost in digitization – A systematic review about the diagnostic test accuracy of digital pathology solutions
Jessica,
Volkert Dirk,
Mia S.,
Christine W.,
Dagný R.,
John
:
Short and long-term psychosocial consequences of participating in a colorectal cancer screening programme: a matched longitudinal study
BMJ Evidence-Based Medicine 2022 DOI
Camilla A.,
Marie,
John,
Janus Laust,
Martin Bach,
Annette Sofie
:
Learning strategies of general practitioners striving to achieve point-of-care ultrasound competence: a qualitative study
Scandinavian Journal of Primary Health Care 2022 DOI
Christoffer Bjerre,
John,
Jacob
:
Sarcopenia: early prevention or overdiagnosis?
The BMJ 2022 DOI
Christina Sadolin,
Volkert Dirk,
Anna R.,
Susanne Oksbjerg,
John
:
Use and diagnostic outcomes of cancer patient pathways in Denmark – is the place of initial diagnostic work-up an important factor?
BMC Health Services Research 2022 DOI
Ingrid C.,
Volkert Dirk,
Kristoffer,
Nikolaj,
Asbjørn,
John
et al.:
Is it okay to choose to receive bad news by telephone? An observational study on psychosocial consequences of diagnostic workup for lung cancer suspicion
Acta Oncologica 2022 DOI
Christian Fugl,
Jonas,
Anders,
Volkert Dirk,
Jonathan D.,
John
et al.:
'Four of five frequently used orthopedic PROMs possess inadequate content validity: a COSMIN evaluation of the mHHS, HAGOS, IKDC-SKF, KOOS and KNEES-ACL
Knee Surgery, Sports Traumatology, Arthroscopy 2022 DOI
Kristine,
Anne,
John,
Alexandra Brandt Ryborg
:
Conceptualisation of a measurement framework for Needs-based Quality of Life among patients with multimorbidity
Journal of Patient-Reported Outcomes 2022 DOI
Alexandra Brandt Ryborg,
Benedicte Møller,
John
:
Informationens ironi: Patienters frie adgang til sundhedsdata
Tidsskrift for forskning i sygdom og samfund 2022 DOI
Camilla A.,
Timothy C.,
Michael D.,
John,
Annette Sofie,
Ole
et al.:
General Practitioners’ Perspectives on Appropriate Use of Ultrasonography in Primary Care in Denmark: A Multistage Mixed Methods Study
Annals of Family Medicine 2022 DOI
Alexandra Brandt Ryborg,
John
:
Snart er vi alle patienter: Overdiagnostik i medicinske og samfundsfaglige perspektiver
Samfundslitteratur 2022
John
:
Overdiagnostik: et negligeret og uløst problem i diagnostikken
Ugeskrift for Læger 2023 FULLTEKST
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Research interests
John Brodersen er specialist i almen medicin (praktiserende læge) og har mere end ti års klinisk erfaring som læge. John Brodersen har en ph.d. inden for folkesundhedsvidenskab og moderne spørgeskemametodik, og er desuden ansat på Københavns Universitet, Afdeling for Almen Medicin.
John Brodersens forskning er fokuseret på forebyggelse, risiko, screening, overdiagnostik, evidensbaseret medicin, og multisygdom. Aktuelt arbejder han med screening for bryst-, lunge-, livmoderhals- og tarm-kræft, samt screening for abdominalt aorta aneurisme og prænatalscreening. Han har udviklet og valideret spørgeskemaer til måling af psykosociale konsekvenser hos personer, der er blevet overdiagnosticeret eller har fået et falsk positivt svar ved screening for livstruende sygdomme. Han har anvendt kvalitative og kvantitative metoder i sin forskning, blandt andet Rasch modellen til at kvantificere subjektive begreber såsom psykosociale konsekvenser. John Brodersen har publiceret bredt i danske, nordiske og internationale videnskabelige tidsskrifter.
Teaching
Underviser og vejleder i emnerne forebyggelse, screening, overdiagnostik, risiko, risikoformidling, det informerede samtykke ved screening, spørgeskemaudvikling og validering, og evidensbaseret medicin.
