• J. B. Winsløws Vej 19, 2.

    5000 Odense C


1990 …2022
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Personal profile

Research areas

Tutored by Professor Lars Gram, Odense University’s Clinical Pharmacology Unit, JH established a pharmacoepidemiologic research line in the late 1980s. A major breakthrough came in 1990 with the advent of the Odense University Pharmacoepidemiologic Database (OPED). It has complete capture of all computerised prescriptions in Region of Southern Denmark (population 1.2 million) which allows a detailed account of how drugs are distributed among different users and - by linkage to other data resources - the experience of the drug users in terms of adverse events. Among the research interests are studies of rational prescribing, neurological diseases caused by drug treatment, interventions to improve prescribing among GPs, development of indices to characterise patterns of prescribing and management of dyspepsia. Among the collaborators are the General Practice Research Unit, the Research Unit of Demographics and Statistics and a number of clinical research units at Odense University Hospital.

Recent activities include studies of association between long-term drug use and cancer, on self-controlled designs and on use of communicative measures of risk and benefit.

Education/Academic qualification

MD, University of Copenhagen

Research areas

  • Pharmacological therapy
  • International Comparison
  • Cancer

Fingerprint Dive into the research topics where Jesper Hallas is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 39 Similar Profiles
Denmark Medicine & Life Sciences
Prescriptions Medicine & Life Sciences
Pharmaceutical Preparations Medicine & Life Sciences
Case-Control Studies Medicine & Life Sciences
Population Medicine & Life Sciences
Cohort Studies Medicine & Life Sciences
Confidence Intervals Medicine & Life Sciences
Odds Ratio Medicine & Life Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 1990 2019

20 years of major and minor malformations in Danish Health Registries: A descriptive study

Damkier, P., Bliddal, M., Pottegård, A., Hallas, J. & Broe, A., 27. Aug 2019.

Research output: Contribution to conference without publisher/journalPosterResearchpeer-review

Adherence to Prescribed Drugs Among 65-74 Year Old Men Diagnosed with Abdominal Aortic Aneurysm or Peripheral Arterial Disease in a Screening Trial: A VIVA Substudy

Qvist, I., Søgaard, R., Lindholt, J. S., Lorentzen, V., Hallas, J. & Frost, L., Mar 2019, In : European Journal of Vascular and Endovascular Surgery. 57, 3, p. 442-450

Research output: Contribution to journalJournal articleResearchpeer-review

Hydroxymethylglutaryl-CoA Reductase Inhibitors
Abdominal Aortic Aneurysm
Pharmaceutical Preparations

Angiotensin II receptor blockers are safe in patients with prior angioedema related to angiotensin-converting enzyme inhibitors - a nationwide registry-based cohort study

Rasmussen, E. R., Pottegård, A., Bygum, A., von Buchwald, C., Homøe, P. & Hallas, J., May 2019, In : Journal of Internal Medicine. 285, 5, p. 553-561

Research output: Contribution to journalJournal articleResearchpeer-review

Angiotensin Receptor Antagonists
Cohort Studies
Propensity Score
Adrenergic beta-Antagonists
75 Downloads (Pure)

Antidepressant use in Denmark, Germany, Spain, and Sweden between 2009 and 2014: Incidence and comorbidities of antidepressant initiators

Forns, J., Pottegård, A., Reinders, T., Poblador-Plou, B., Morros, R., Brandt, L., Cainzos-Achirica, M., Hellfritzsch, M., Schink, T., Prados-Torres, A., Giner-Soriano, M., Hägg, D., Hallas, J., Cortés, J., Jacquot, E., Deltour, N., Perez-Gutthann, S., Pladevall, M. & Reutfors, J., 2019, In : Journal of Affective Disorders. 249, p. 242-252

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
S 20098

Antihistamine use and risk of ovarian cancer: A population-based case-control study

Verdoodt, F., Pottegård, A., Dehlendorff, C., Jäättelä, M., Hallas, J., Friis, S. & Kjaer, S. K., 1. Feb 2019, In : Maturitas. 120, p. 47-52

Research output: Contribution to journalJournal articleResearchpeer-review

Histamine Antagonists
Ovarian Neoplasms
Case-Control Studies
Odds Ratio

Activities 2006 2012

International Society for Pharmacoepidemiology (External organisation)

Jesper Hallas (Chairman)
Aug 2012Aug 2015

Activity: MembershipMembership of commitees, commissions, boards, councils, associations, organisations, or similar

University of Tromsø (External organisation)

Jesper Hallas (Member)
10 May 2012

Activity: MembershipMembership of review committee

University of Southern Denmark (External organisation)

Jesper Hallas (Chairman)
2012 → …

Activity: MembershipMembership of research networks or expert groups

University of Oslo (External organisation)

Jesper Hallas (Member)
16. Dec 2011

Activity: MembershipMembership of review committee

Validity of data sources in pharmacoepidemiology

Jesper Hallas (Lecturer)
2 Dec 2011

Activity: Talks and presentationsTalks and presentations in private or public companies

Projects 2019 2022

Press / Media

Debat: Syddansk Universitet: EMA kontrakter er ikke ulovlige

Jesper Hallas


1 Media contribution

Press/Media: Press / Media

SDU har skrevet under på ulovlig tavshedsklausul

Jesper Hallas


1 Media contribution

Press/Media: Press / Media

Ph.d.-forsvar om forbrug af psykofarmaka til ældre med demens

Jesper Hallas


1 Media contribution

Press/Media: Press / Media


Ridder af Dannebrog

Jesper Hallas (Recipient), 26 Oct 2018

Prize: Prizes, scholarships, distinctions

Undervisningspris, Sundhedsvidenskabelige fakultet, SDU, 2010

Jesper Hallas (Recipient), 1 Oct 2010

Prize: Prizes, scholarships, distinctions