Clinical epidemiology in the era of big data: new opportunities, familiar challenges

by Ehrenstein V, Nielsen H, Pedersen AB, Johnsen SP, Pedersen L
Published 2017-04-01

Correspondence between general practitioner-reported medication use and timing of prescription dispensation

by Johannesdottir SA, Mægbæk ML, Hansen JG, Lash TL, Pedersen L, Ehrenstein V
Published 2012-01-01

Danish clinical quality databases – an important and untapped resource for clinical research

by Sørensen HT, Pedersen L, Jørgensen J, Ehrenstein V
Published 2016-10-01

Existing data sources for clinical epidemiology: The Danish National Database of Reimbursed Prescriptions

by Johannesdottir SA, Horváth-Puhó E, Ehrenstein V, Schmidt M, Pedersen L, Sørensen HT
Published 2012-11-01

The Danish National Patient Registry: a review of content, data quality, and research potential

by Schmidt M, Schmidt SAJ, Sandegaard JL, Ehrenstein V, Pedersen L, Sørensen HT
Published 2015-11-01

Conditioning on future exposure to define study cohorts can induce bias: the case of low-dose acetylsalicylic acid and risk of major bleeding

by Lund JL, Horváth-Puhó E, Komjáthiné Szépligeti S, Sørensen HT, Pedersen L, Ehrenstein V, Stürmer T
Published 2017-11-01