| # | Title | Journal | Year | Citations |
|---|
| 1 | Data Resource Profile: The Danish National Prescription Registry | International Journal of Epidemiology | 2017 | 649 |
| 2 | The Danish Medical Birth Register | European Journal of Epidemiology | 2018 | 432 |
| 3 | Basic & Clinical Pharmacology & Toxicology Policy for Experimental and Clinical studies | Basic and Clinical Pharmacology and Toxicology | 2018 | 256 |
| 4 | Characteristics and predictors of hospitalization and death in the first 11 122 cases with a positive RT-PCR test for SARS-CoV-2 in Denmark: a nationwide cohort | International Journal of Epidemiology | 2020 | 219 |
| 5 | Hydrochlorothiazide use and risk of nonmelanoma skin cancer: A nationwide case-control study from Denmark | Journal of the American Academy of Dermatology | 2018 | 218 |
| 6 | Effect of an In-Hospital Multifaceted Clinical Pharmacist Intervention on the Risk of Readmission | JAMA Internal Medicine | 2018 | 203 |
| 7 | Trends in attention-deficit hyperactivity disorder medication use: a retrospective observational study using population-based databases | Lancet Psychiatry,the | 2018 | 187 |
| 8 | Hydrochlorothiazide use is strongly associated with risk of lip cancer | Journal of Internal Medicine | 2017 | 128 |
| 9 | Reduced prevalence of SARS-CoV-2 infection in ABO blood group O | Blood Advances | 2020 | 125 |
| 10 | Proton-pump inhibitors among adults: a nationwide drug-utilization study | Therapeutic Advances in Gastroenterology | 2018 | 92 |
| 11 | 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 Evaluation – JOELLE study) | Clinical Epidemiology | 2018 | 84 |
| 12 | Adverse outcomes and mortality in users of non-steroidal anti-inflammatory drugs who tested positive for SARS-CoV-2: A Danish nationwide cohort study | PLoS Medicine | 2020 | 76 |
| 13 | Association of Hydrochlorothiazide Use and Risk of Malignant Melanoma | JAMA Internal Medicine | 2018 | 74 |
| 14 | Considerations for Pharmacoepidemiological Studies of Drug–Cancer Associations | Basic and Clinical Pharmacology and Toxicology | 2018 | 70 |
| 15 | Interaction between warfarin and cannabis | Basic and Clinical Pharmacology and Toxicology | 2019 | 68 |
| 16 | New use of prescription drugs prior to a cancer diagnosis | Pharmacoepidemiology and Drug Safety | 2017 | 63 |
| 17 | A smartphone application supporting patients with psoriasis improves adherence to topical treatment: a randomized controlled trial | British Journal of Dermatology | 2018 | 61 |
| 18 | Use of N-nitrosodimethylamine (NDMA) contaminated valsartan products and risk of cancer: Danish nationwide cohort study | BMJ: British Medical Journal | 2018 | 60 |
| 19 | Sequence symmetry analysis in pharmacovigilance and pharmacoepidemiologic studies | European Journal of Epidemiology | 2017 | 58 |
| 20 | Effects of metformin, rosiglitazone and insulin on bone metabolism in patients with type 2 diabetes | Bone | 2018 | 55 |
| 21 | Comparable COVID‐19 outcomes with current use of GLP‐1 receptor agonists, DPP‐4 inhibitors or SGLT‐2 inhibitors among patients with diabetes who tested positive for SARS‐CoV‐2 | Diabetes, Obesity and Metabolism | 2021 | 53 |
| 22 | β-adrenoreceptors and the risk of Parkinson's disease | Lancet Neurology, The | 2020 | 49 |
| 23 | Antidepressant use in Denmark, Germany, Spain, and Sweden between 2009 and 2014: Incidence and comorbidities of antidepressant initiators | Journal of Affective Disorders | 2019 | 47 |
| 24 | Use of Non‐Vitamin K Antagonist Oral Anticoagulants 2008–2016: A Danish Nationwide Cohort Study | Basic and Clinical Pharmacology and Toxicology | 2018 | 45 |
| 25 | Venous Thromboembolism and Major Bleeding in Patients With Coronavirus Disease 2019 (COVID-19): A Nationwide, Population-Based Cohort Study | Clinical Infectious Diseases | 2021 | 44 |
| 26 | Risk and course of SARS-CoV-2 infection in patients treated for hypothyroidism and hyperthyroidism | Lancet Diabetes and Endocrinology,the | 2021 | 44 |
| 27 | Association of Potent and Very Potent Topical Corticosteroids and the Risk of Osteoporosis and Major Osteoporotic Fractures | JAMA Dermatology | 2021 | 42 |
| 28 | Trends in Use of Paracetamol in the Nordic Countries | Basic and Clinical Pharmacology and Toxicology | 2018 | 40 |
| 29 | Use of hydrochlorothiazide and risk of skin cancer: a nationwide Taiwanese case–control study | British Journal of Cancer | 2019 | 40 |
| 30 | Morbidity and mortality among older people admitted to nursing home | Age and Ageing | 2020 | 39 |
| 31 | Significant association between the use of different proton pump inhibitors and microscopic colitis: a nationwide Danish case‐control study | Alimentary Pharmacology and Therapeutics | 2018 | 38 |
| 32 | Hydrochlorothiazide use and risk for Merkel cell carcinoma and malignant adnexal skin tumors: A nationwide case-control study | Journal of the American Academy of Dermatology | 2019 | 38 |
| 33 | Use of antipsychotics and risk of breast cancer: a Danish nationwide case–control study | British Journal of Clinical Pharmacology | 2018 | 37 |
| 34 | <p>Existing Data Sources in Clinical Epidemiology: The Danish COVID-19 Cohort</p> | Clinical Epidemiology | 2020 | 37 |
| 35 | Multifaceted Intervention Including Motivational Interviewing to Support Medication Adherence after Stroke/Transient Ischemic Attack: A Randomized Trial | Cerebrovascular Diseases Extra | 2014 | 36 |
| 36 | Considerations for pharmacoepidemiological analyses in the SARS‐CoV‐2 pandemic | Pharmacoepidemiology and Drug Safety | 2020 | 36 |
| 37 | Control yourself: ISPE‐endorsed guidance in the application of self‐controlled study designs in pharmacoepidemiology | Pharmacoepidemiology and Drug Safety | 2021 | 36 |
| 38 | Treatment Changes among Users of Non‐Vitamin K Antagonist Oral Anticoagulants in Atrial Fibrillation | Basic and Clinical Pharmacology and Toxicology | 2017 | 35 |
| 39 | Use of antibiotics in childhood and risk of Type 1 diabetes: a population‐based case–control study | Diabetic Medicine | 2017 | 35 |
| 40 | Methimazole and risk of acute pancreatitis | Lancet Diabetes and Endocrinology,the | 2020 | 35 |
| 41 | Use of sildenafil or other phosphodiesterase inhibitors and risk of melanoma | British Journal of Cancer | 2016 | 34 |
| 42 | Lack of Association Between Proton Pump Inhibitor Use and Cognitive Decline | Clinical Gastroenterology and Hepatology | 2018 | 32 |
| 43 | Risk of lactic acidosis in type 2 diabetes patients using metformin: A case control study | PLoS ONE | 2018 | 32 |
| 44 | Increased risk of major adverse cardiac events following the onset of acute exacerbations of COPD | Respirology | 2019 | 32 |
| 45 | Validity of the Prescriber Information in the Danish National Prescription Registry | Basic and Clinical Pharmacology and Toxicology | 2016 | 31 |
| 46 | Clinical events preceding switching and discontinuation of oral anticoagulant treatment in patients with atrial fibrillation | Europace | 2017 | 29 |
| 47 | Subdural hematoma cases identified through a Danish patient register: diagnosis validity, clinical characteristics, and preadmission antithrombotic drug use | Pharmacoepidemiology and Drug Safety | 2016 | 28 |
| 48 | Medication errors in pediatric inpatients: a study based on a national mandatory reporting system | European Journal of Pediatrics | 2017 | 28 |
| 49 | Clopidogrel–Paclitaxel Drug–Drug Interaction: A Pharmacoepidemiologic Study | Clinical Pharmacology and Therapeutics | 2017 | 27 |
| 50 | Statin use and mortality among ovarian cancer patients: A population‐based cohort study | International Journal of Cancer | 2017 | 27 |
