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Papers published by Professor Vera Ehrenstein:
Importance of Reporting Complete Procedures of Identifying Patients from the Danish National Patient Registry: The Case of Neonatal Jaundice and Epilepsy
Sun Y, Dreier JW, Wu C, Ehrenstein V, Christensen J
Clinical Epidemiology 2022, 14:445-452
Published Date: 6 April 2022
Retraction of COVID-19 Pharmacoepidemiology Research Could Have Been Avoided by Effective Use of Reporting Guidelines
Benchimol EI, Moher D, Ehrenstein V, Langan SM
Clinical Epidemiology 2020, 12:1403-1420
Published Date: 21 December 2020
Motor Neuron Disease and Risk of Cancer: A Population-Based Cohort Study in Denmark
Sørensen TT, Farkas DK, Riahi EZB, Ehrenstein V, Henderson VW
Clinical Epidemiology 2020, 12:1347-1353
Published Date: 8 December 2020
The Danish health care system and epidemiological research: from health care contacts to database records
Schmidt M, Schmidt SAJ, Adelborg K, Sundbøll J, Laugesen K, Ehrenstein V, Sørensen HT
Clinical Epidemiology 2019, 11:563-591
Published Date: 12 July 2019
Conditioning on future exposure to define study cohorts can induce bias: the case of low-dose acetylsalicylic acid and risk of major bleeding
Lund JL, Horváth-Puhó E, Komjáthiné Szépligeti S, Sørensen HT, Pedersen L, Ehrenstein V, Stürmer T
Clinical Epidemiology 2017, 9:611-626
Published Date: 23 November 2017
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 postmenopausal osteoporosis
Munch T, Christensen LB, Adelborg K, Tell GS, Apalset EM, Westerlund A, Lagerros YT, Kahlert J, Xue F, Ehrenstein V
Clinical Epidemiology 2017, 9:411-419
Published Date: 17 August 2017
Clinical epidemiology in the era of big data: new opportunities, familiar challenges
Ehrenstein V, Nielsen H, Pedersen AB, Johnsen SP, Pedersen L
Clinical Epidemiology 2017, 9:245-250
Published Date: 27 April 2017
Confounding in observational studies based on large health care databases: problems and potential solutions – a primer for the clinician
Nørgaard M, Ehrenstein V, Vandenbroucke JP
Clinical Epidemiology 2017, 9:185-193
Published Date: 28 March 2017
Positive predictive values of International Classification of Diseases, 10th revision codes for dermatologic events and hypersensitivity leading to hospitalization or emergency room visit among women with postmenopausal osteoporosis in the Danish and Swedish national patient registries
Adelborg K, Christensen LB, Munch T, Kahlert J, Trolle Lagerros Y, Tell GS, Apalset EM, Xue F, Ehrenstein V
Clinical Epidemiology 2017, 9:179-184
Published Date: 24 March 2017
Danish clinical quality databases – an important and untapped resource for clinical research
Sørensen HT, Pedersen L, Jørgensen J, Ehrenstein V
Clinical Epidemiology 2016, 8:425-427
Published Date: 25 October 2016
Design and methods for a Scandinavian pharmacovigilance study of osteonecrosis of the jaw and serious infections among cancer patients treated with antiresorptive agents for the prevention of skeletal-related events
Acquavella J, Ehrenstein V, Schiødt M, Heide-Jørgensen U, Kjellman A, Hansen S, Larsson Wexell C, Herlofson BB, Noerholt SE, Ma H, Ӧhrling K, Hernandez RK, Sørensen HT
Clinical Epidemiology 2016, 8:267-272
Published Date: 20 July 2016
Challenges in translating end points from trials to observational cohort studies in oncology
Ording AG, Cronin-Fenton D, Ehrenstein V, Lash TL, Acquavella J, Rørth M, Sørensen HT
Clinical Epidemiology 2016, 8:195-200
Published Date: 11 June 2016
Helping everyone do better: a call for validation studies of routinely recorded health data
Ehrenstein V, Petersen I, Smeeth L, Jick SS, Benchimol EI, Ludvigsson JF, Sørensen HT
Clinical Epidemiology 2016, 8:49-51
Published Date: 12 April 2016
The Danish National Patient Registry: a review of content, data quality, and research potential
Schmidt M, Schmidt SAJ, Sandegaard JL, Ehrenstein V, Pedersen L, Sørensen HT
Clinical Epidemiology 2015, 7:449-490
Published Date: 17 November 2015
Validation of algorithms to detect distant metastases in men with prostate cancer using routine registry data in Denmark
Ehrenstein V, Hernandez RK, Maegbaek ML, Kahlert J, Nguyen-Nielsen M, Nørgaard M, Liede A
Clinical Epidemiology 2015, 7:259-265
Published Date: 10 April 2015
Prevalence and characteristics of patients with low levels of low-density lipoprotein cholesterol in northern Denmark: a descriptive study
Schmidt SA, Heide-Jørgensen U, Manthripragada AD, Ehrenstein V
Clinical Epidemiology 2015, 7:201-212
Published Date: 26 February 2015
Existing data sources for clinical epidemiology: Scandinavian Cohort for osteonecrosis of the jaw – work in progress and challenges
Schiodt M, Larsson Wexell C, Herlofson BB, Giltvedt KM, Norholt SE, Ehrenstein V
Clinical Epidemiology 2015, 7:107-116
Published Date: 22 January 2015
Parental celiac disease and risk of asthma in offspring: a Danish nationwide cohort study
Andersen ABT, Erichsen R, Kappelman MD, Frøslev T, Ehrenstein V
Clinical Epidemiology 2015, 7:37-44
Published Date: 29 December 2014
Quality of venous thromboembolism diagnoses among prostate cancer patients in the Danish National Registry of Patients
Drljevic A, Borre M, Høyer M, Ehrenstein V, Nguyen-Nielsen M
Clinical Epidemiology 2014, 6:351-357
Published Date: 4 October 2014
Autism spectrum disorders in children of parents with inflammatory bowel disease – a nationwide cohort study in Denmark
Andersen ABT, Ehrenstein V, Erichsen R, Frøslev T, Sørensen HT
Clinical and Experimental Gastroenterology 2014, 7:105-110
Published Date: 7 May 2014
Risk of miscarriage among users of corticosteroid hormones: a population-based nested case-control study
Bjørn AM, Nielsen RB, Nørgaard M, Nohr EA, Ehrenstein V
Clinical Epidemiology 2013, 5:287-294
Published Date: 14 August 2013
Existing data sources for clinical epidemiology: Danish registries for studies of medical genetic diseases
Nguyen-Nielsen M, Svensson E, Vogel I, Ehrenstein V, Sunde L
Clinical Epidemiology 2013, 5:249-262
Published Date: 8 August 2013
Validity of an algorithm to identify osteonecrosis of the jaw in women with postmenopausal osteoporosis in the Danish National Registry of Patients
Gammelager H, Sværke C, Noerholt SE, Neumann-Jensen B, Xue F, Critchlow C, Bergdahl J, Lagerros YT, Kieler H, Tell GS, Ehrenstein V
Clinical Epidemiology 2013, 5:263-267
Published Date: 1 August 2013
Evaluation of an algorithm ascertaining cases of osteonecrosis of the jaw in the Swedish National Patient Register
Bergdahl J, Jarnbring F, Ehrenstein V, Gammelager H, Granath F, Kieler H, Svensson M, Tell GS, Trolle Lagerros Y
Clinical Epidemiology 2013, 5:1-7
Published Date: 4 January 2013
Existing data sources for clinical epidemiology: The Danish National Database of Reimbursed Prescriptions
Johannesdottir SA, Horváth-Puhó E, Ehrenstein V, Schmidt M, Pedersen L, Sørensen HT
Clinical Epidemiology 2012, 4:303-313
Published Date: 12 November 2012
Positive predictive values of the coding for bisphosphonate therapy among cancer patients in the Danish National Patient Registry
Nielsson MS, Erichsen R, Frøslev T, Taylor A, Acquavella J, Ehrenstein V
Clinical Epidemiology 2012, 4:233-236
Published Date: 23 August 2012
Use of prescription paracetamol during pregnancy and risk of asthma in children: a population-based Danish cohort study
Andersen ABT, Farkas DK, Mehnert F, Ehrenstein V, Erichsen R
Clinical Epidemiology 2012, 4:33-40
Published Date: 1 February 2012
Correspondence between general practitioner-reported medication use and timing of prescription dispensation
Johannesdottir SA, Mægbæk ML, Hansen JG, Lash TL, Pedersen L, Ehrenstein V
Clinical Epidemiology 2012, 4:13-18
Published Date: 5 January 2012
Use of prescribed drugs among primiparous women: an 11-year population-based study in Denmark
Bjørn AM, Nørgaard M, Hundborg HH, Nohr EA, Ehrenstein V
Clinical Epidemiology 2011, 3:149-156
Published Date: 2 May 2011
Existing data sources for clinical epidemiology: Aarhus University Prescription Database
Vera Ehrenstein, Sussie Antonsen, Lars Pedersen
Clinical Epidemiology 2010, 2:273-279
Published Date: 2 December 2010
Validation of spontaneous abortion diagnoses in the Danish National Registry of Patients
Sarah Rytter Lohse, Dóra Körmendiné Farkas, Nicolai Lohse, et al
Clinical Epidemiology 2010, 2:247-250
Published Date: 27 October 2010
Medical databases in studies of drug teratogenicity: methodological issues
Vera Ehrenstein, Henrik T Sørensen, Leiv S Bakketeig, et al
Clinical Epidemiology 2010, 2:37-43
Published Date: 25 March 2010
Association of Apgar scores with death and neurologic disability
Vera Ehrenstein
Clinical Epidemiology 2009, 1:45-53
Published Date: 6 May 2009