Potential of prescription registries to capture individual-level use of aspirin and other nonsteroidal anti-inflammatory drugs in Denmark: trends in utilization 1999–2012

by Schmidt M, Hallas J, Friis S
Published 2014-05-01

The Validity of Danish Prescription Data to Measure Use of Aspirin and Other Non-Steroidal Anti-Inflammatory Drugs and Quantification of Bias Due to Non-Prescription Drug Use

by Gaster N, Hallas J, Pottegård A, Friis S, Schmidt M
Published 2021-07-01

Congenital Malformations in Denmark: Considerations for the Use of Danish Health Care Registries

by Broe A, Damkier P, Pottegård A, Hallas J, Bliddal M
Published 2020-12-01

Feasibility Study of Advanced Cardiovascular Screening in Middle-Aged Patients with Diabetes

by Lindholt JS, Frystyk J, Hallas J, Rasmussen LM, Diederichsen ACP
Published 2020-05-01

The Danish National Prescription Registry in studies of a biological pharmaceutical: palivizumab – validation against two external data sources

by Haerskjold A, Henriksen L, Way S, Malham M, Hallas J, Pedersen L, Stensballe LG
Published 2015-05-01

Prescription duration and treatment episodes in oral glucocorticoid users: application of the parametric waiting time distribution

by Laugesen K, Støvring H, Hallas J, Pottegård A, Jørgensen JOL, Sørensen HT, Petersen I
Published 2017-11-01

A cohort study on the risk of lymphoma and skin cancer in users of topical tacrolimus, pimecrolimus, and corticosteroids (Joint European Longitudinal Lymphoma and Skin Cancer Eval...

by Castellsague J, Kuiper JG, Pottegård A, Anveden Berglind I, Dedman D, Gutierrez L, Calingaert B, van Herk-Sukel MP, Hallas J, Sundström A, Gallagher AM, Kaye JA, Pardo C, Rothman KJ, Perez-Gutthann S
Published 2018-03-01

The Validity of Intracerebral Hemorrhage Diagnoses in the Danish Patient Registry and the Danish Stroke Registry

by Hald SM, Kring Sloth C, Agger M, Schelde-Olesen MT, Højholt M, Hasle M, Bogetofte H, Olesrud I, Binzer S, Madsen C, Krone W, García Rodríguez LA, Al-Shahi Salman R, Hallas J, Gaist D
Published 2020-12-01

Existing Data Sources in Clinical Epidemiology: The Danish COVID-19 Cohort

by Pottegård A, Kristensen KB, Reilev M, Lund LC, Ernst MT, Hallas J, Thomsen RW, Christiansen CF, Sørensen HT, Johansen NB, Støvring H, Christensen S, Kragh Thomsen M, Husby A, Voldstedlund M, Kjær J, Brun NC
Published 2020-08-01