Retraction of COVID-19 Pharmacoepidemiology Research Could Have Been Avoided by Effective Use of Reporting Guidelines

by Benchimol EI, Moher D, Ehrenstein V, Langan SM
Published 2020-12-01

Positive predictive values of International Classification of Diseases, 10th revision codes for dermatologic events and hypersensitivity leading to hospitalization or emergency ro...

by Adelborg K, Christensen LB, Munch T, Kahlert J, Trolle Lagerros Y, Tell GS, Apalset EM, Xue F, Ehrenstein V
Published 2017-03-01

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

Helping everyone do better: a call for validation studies of routinely recorded health data

by Ehrenstein V, Petersen I, Smeeth L, Jick SS, Benchimol EI, Ludvigsson JF, Sørensen HT
Published 2016-04-01

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

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

Evaluation of an algorithm ascertaining cases of osteonecrosis of the jaw in the Swedish National Patient Register

by Svensson M, Kieler H, Granath F, Gammelager H, Ehrenstein V, Jarnbring F, Bergdahl J, Tell GS, Trolle Lagerros Y
Published 2013-01-01

Validity of an algorithm to identify osteonecrosis of the jaw in women with postmenopausal osteoporosis in the Danish National Registry of Patients

by Gammelager H, Sværke C, Noerholt SE, Neumann-Jensen B, Xue F, Critchlow C, Bergdahl J, Lagerros YT, Kieler H, Tell GS, Ehrenstein V
Published 2013-08-01

Positive predictive values of ICD-10 codes to identify incident acute pancreatitis and incident primary malignancy in the Scandinavian national patient registries among women with...

by Munch T, Christensen LB, Adelborg K, Tell GS, Apalset EM, Westerlund A, Lagerros YT, Kahlert J, Xue F, Ehrenstein V
Published 2017-08-01