OOIR: Observatory of International Research

Papers

(The TQCC of Clinical Epidemiology is 8. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-06-01 to 2025-06-01.)

Article	Citations
Association of Prior Antithrombotic Drug Use with 90-Day Mortality After Intracerebral Hemorrhage	336
Incidence of Graves’ Disease with Validation and Completeness of the Diagnosis for Registry Extracts in the Danish National Patient Register	98
Burden of Carbon Monoxide Poisoning in Asian Countries From 1990 to 2021 and Its Projection Until 2030: An Analysis of the Global Burden of Disease Study 2021	52
Cardiovascular Data Quality in the Danish National Patient Registry (1977–2024): A Systematic Review	49
Estimating the Future Burden of Myocardial Infarction in France Until 2035: An Illness-Death Model-Based Approach	48
The DIAbetes MANagement and Treatment (DIAMANT) Cohort	46
Identifying Individual Medications Affecting Pulmonary Outcomes When Multiple Medications are Present	45
Modeling the Transmission Dynamics of COVID-19 Among Five High Burden African Countries	44
Data-Driven Identification of Long-Term Glycemia Clusters and Their Individualized Predictors in Finnish Patients with Type 2 Diabetes	43
Identifying Non-Steroidal Anti-Inflammatory Drug (NSAID) Users Among People with Osteoarthritis Through Administrative and Clinician-Reported Data – A Validation Study of 116,162 Patients	43
Initiation of Medical Therapy for Heart Failure Patients According to Kidney Function: A Danish Nationwide Study	41
Large Burden of Stroke Incidence in People with Cardiac Disease: A Linked Data Cohort Study	37
Comments on “Development and Validation of a META-Algorithm to Identify the Indications of Use of Biological Drugs Approved for the Treatment of Immune-Mediated Inflammatory Diseases from Claims Datab	35
Hospitalization Endpoint in Clinical Trials of Outpatient Settings: using Anti-SARS-COV-2 Therapy as an Example	35
The Danish National Hospital Medication Register: A Resource for Pharmacoepidemiology	32
The Impact of the COVID-19 Pandemic on Incidence and Short-Term Survival for Common Solid Tumours in the United Kingdom: A Cohort Analysis	31
Using Routinely Collected Electronic Healthcare Record Data to Investigate Fibrotic Multimorbidity in England [Letter]	31
Response to “A Validation Study of the Danish ICD-10 Diagnosis Code K75.0 for Pyogenic Liver Abscess” [Response to Letter]	30
An Explainable Machine Learning Model to Predict Acute Kidney Injury After Cardiac Surgery: A Retrospective Cohort Study	29
Hospital-Treated Infections and 15-year Incidence of Musculoskeletal Disorders: A Large Population-Based Cohort Study	28
Advancing an Algorithm for the Identification of Patients with High Data-Continuity in Electronic Health Records	28
Report on the Joint Workshop on the Relations between Health Inequalities, Ageing and Multimorbidity, Iceland, May 3–4, 2023	28
Potential of Health Insurance Claims Data to Predict Fractures in Older Adults: A Prospective Cohort Study	27
Adverse Clinical Outcomes Attributable to Socioeconomic and Ethnic Disparities Among People with Type 2 Diabetes in New Zealand Between 1994–2018: A Multiple Linked Cohort Study	25
Cholesterol and Hypertension Treatment Improve Coronary Risk Prediction but Not Time-Dependent Covariates or Competing Risks	25

Validity of a Hypertrophic Cardiomyopathy Diagnosis in Adult Patients in the Danish National Patient Register	23
Trends in Abdominal Aortic Aneurysm Repair Incidence, Comorbidity, Treatment, and Mortality: A Danish Nationwide Cohort Study, 1996–2018	23
Disease Burden of Glaucoma in China: Findings from the Global Burden of Disease 2019 Study	22
Trends in the Annual Consultation Incidence and Prevalence of Low Back Pain and Osteoarthritis in England from 2000 to 2019: Comparative Estimates from Two Clinical Practice Databases	21
Validation of Stroke Risk Factors in Patients with Acute Ischemic Stroke, Transient Ischemic Attack, or Intracerebral Hemorrhage on Taiwan’s National Health Insurance Claims Data	21
Investigating Drug-Induced Thyroid Dysfunction Adverse Events Associated With Non-Selective RET Multi-Kinase Inhibitors: A Pharmacovigilance Analysis Utilizing FDA Adverse Event Reporting System Data	20
Second Primary Cancers After Gastric Cancer, and Gastric Cancer as Second Primary Cancer	20
Time Trends in Male Breast Cancer Incidence, Mortality, and Survival in Austria (1983–2017)	20
Trajectories of Body Mass Index and Risk for Diabetes Complications and All-Cause Mortality in Finnish Type 2 Diabetes Patients	19
Combined Lifestyle Behaviors and the Incidence of Common Cancer Types in the Norwegian Women and Cancer Study (NOWAC)	18
Prevalence of Statin Use and Predictors of Statin Initiation Among Patients with Alcohol-Related Cirrhosis - A Danish Nationwide Cohort Study	18
Anticancer Drugs Compared to No Anticancer Drugs in Patients with Advanced Hepatobiliary Cancer: A Mapping Review and Evidence Gap Map	17
Validation of a Diagnostic Model to Differentiate Multiple Myeloma from Bone Metastasis	17
Uneven Between-Hospital Distribution of Patient-Related Risk Factors for Adverse Outcomes of Colorectal Cancer Treatment: A Population-Based Register Study	16
Development and Validation of Algorithms to Identify COVID-19 Patients Using a US Electronic Health Records Database: A Retrospective Cohort Study	16
A Novel Biomarker Scoring System Alone or in Combination with the GRACE Score for the Prognostic Assessment in Non-ST-Elevation Myocardial Infarction	16
Perinatal Mental Illness and Risk of Incident Autoimmune Disease: A Population-Based Propensity-Score Matched Cohort Study	16
Healthcare Use in the Five Years Before a First Infertility Diagnosis: A Danish Register-Based Case–Control Study in the CROSS-TRACKS Cohort	16
Comparing Methods for Classification of Hospital Visits in the Danish National Patient Registry (DNPR): DNPR3 Versus DNPR2	15
Implementing Multiple Imputation for Missing Data in Longitudinal Studies When Models are Not Feasible: An Example Using the Random Hot Deck Approach	15
Response to “A Validation Study of the Danish ICD-10 Diagnosis Code K75.0 for Pyogenic Liver Abscess” [Letter]	15
Risks of Developing Diabetes and Hyperglycemic Crisis Following Carbon Monoxide Poisoning: A Study Incorporating Epidemiologic Analysis and Animal Experiment	15
Comments on the Risk of Gout in Patients with Psoriasis [Letter]	15
The Role of Cumulative Mean Arterial Pressure Levels in First Stroke Events Among Adults with Hypertension: A 10-Year Prospective Cohort Study	15
Causes of Excess Mortality in Diabetes Patients Without Coronary Artery Disease: A Cohort Study Revealing Endocrinologic Contributions	14
Maternal Smoking During Pregnancy and Offspring Head Growth in Comparison to Height and Weight Growth Up to 6 Years of Age: A Longitudinal Study	14
Serum Prealbumin Levels and Risks of Adverse Clinical Outcomes After Ischemic Stroke	14
Assessment of a Claims-Based ICD-9 and ICD-10 Medication-Related Osteonecrosis of the Jaw Algorithm in the United States	14
The Danish Atrial Fibrillation Registry: A Multidisciplinary National Pragmatic Initiative for Monitoring and Supporting Quality of Care Based on Data Retrieved from Administrative Registries	13
Identifying Valid Algorithms for Number of Lines of Anti-Neoplastic Therapy in the Danish National Patient Registry Among Patients with Advanced Ovarian, Gastric, Renal Cell, Urothelial, and Non-Small	13
Effects of Curative-Intent Treatments on Hepatocellular Carcinoma Survival in Alcohol-Related Cirrhosis: A Nationwide Study	13
Genetically Predicted Cigarette Smoking in Relation to Risk of Polycystic Ovary Syndrome [Corrigendum]	13
Validity of Algorithm for Classification of In- and Outpatient Hospital Contacts in the Danish National Patient Registry	13
Assessing Techniques for Quantifying the Impact of Bias Due to an Unmeasured Confounder: An Applied Example	12
Statin Therapy in Early Breast Cancer: The MASTER Trial; A Randomized Phase III, Placebo-Controlled Comparison of Standard (Neo)Adjuvant Therapy Plus Atorvastatin versus Standard (Neo)Adjuvant Therapy	12
The Mediation Role of Insulin Resistance and Chronic Systemic Inflammation in the Association Between Obesity and NAFLD: Two Cross-Sectional and a Mendelian Randomization Study	12
Validity of First-Time Diagnoses of Darier’s Disease in the Danish National Patient Registry	12
Agreement Between Self-Reported Information and Administrative Data on Comorbidities, Imaging and Treatment in Denmark – A Validation Study of 38,745 Patients with Knee or Hip Osteoarthritis	12
Postoperative Adverse Outcomes in Patients With Frailty Undergoing Urologic Surgery Among American Patients: A Propensity-Score Matched Retrospective Cohort Study	12
Incidence and Risk Factors of Lower Limb Deep Vein Thrombosis in Psychiatric Inpatients by Applying Machine Learning to Electronic Health Records: A Retrospective Cohort Study	12
10-Year Multimorbidity Trajectories in Older People Have Limited Benefit in Predicting Short-Term Health Outcomes in Comparison to Standard Multimorbidity Thresholds: A Population-Based Study	11
The Mediating Role of Body Mass Index in the Association Between Age at First Childbirth and Lung Function Among Chinese Postmenopausal Women	11
The Interaction Between Venous Thromboembolism and Socioeconomic Status on the Risk of Disability Pension	11
Survival in Thyroid Cancer in Sweden From 1999 To 2018	11
A New Drug Safety Signal Detection and Triage System Integrating Sequence Symmetry Analysis and Tree-Based Scan Statistics with Longitudinal Data	11
Neonatal Phototherapy and Clinical Characteristics: The Danish National Patient Registry 2000–2016	11
Effect of Exogenous Hormones and Reproductive Factors in Female Melanoma: A Meta-Analysis [Response to Letter]	11
The Epidemiology of Bile Acid Diarrhea in Denmark [Letter]	11
Effects of COVID-19 Pandemic and Lockdown on Monitoring and Treatment Balance of Finnish Coronary Heart Disease and Type 2 Diabetes Patients	11
Variation in Psychometric Testing in General Practice – A Nationwide Cohort Study	10

Risk of Depression and Anxiety in Those Who Gave Birth to Children Who Developed Invasive Group B Streptococcal Disease: A Population-Based Cohort Study	10
Association Between Medication Adherence and Risk of COPD in Adult Asthma Patients: A Retrospective Cohort Study in Canada	10
Prediction Ability of Charlson, Elixhauser, and Rx-Risk Comorbidity Indices for Mortality in Patients with Hip Fracture. A Danish Population-Based Cohort Study from 2014 – 2018	10
Agreement Between Self-Reported Information and Health Register Data on Chronic Diseases in the Oldest Old	10
Can Lipid-Lowering Drugs Reduce the Risk of Cholelithiasis? A Mendelian Randomization Study	10
Association Between Serum Total Bilirubin and COPD: Results from a Cross-Sectional Study and a Bidirectional Mendelian Randomization Analysis	10
The Danish National Child Health Register	10
Knowledge, Perceptions and Reporting Practices of Theoretical Design in Causal Observational Epidemiological Studies on the Role of Antibiotic Use in the Occurrence of Asthma in Children	10
Incidence, Mortality and Survival in Young People with Co-Occurring Mental Disorders and Substance Use: A Retrospective Linked Routine Data Study in Wales	10
The Long-Term Impact of Vaginal Surgical Mesh Devices in UK Primary Care: A Cohort Study in the Clinical Practice Research Datalink	10
Acupuncture Relieves Opioid-Induced Constipation in Clinical Cancer Therapy – A Meta-Analysis and Systematic Review	10
A Validated Algorithm for Register-Based Identification of Patients with Relapse of Clinical Stage I Testicular Cancer	10
Nitrate in Drinking Water and Time to Pregnancy or Medically Assisted Reproduction in Women and Men: A Nationwide Cohort Study in the Danish National Birth Cohort	9
Treatment of Proximal Humeral Fractures in Older Patients During COVID-19 Pandemic in Germany	9
Serious Mental Illness Exacerbation Post-Bereavement: A Population-Based Study of Partners and Adult Children	9
Transforming the Information System for Research in Primary Care (SIDIAP) in Catalonia to the OMOP Common Data Model and Its Use for COVID-19 Research	9
Tipping Points – Do the Prognostic Values of Multimorbidity and Functional Status Vary with Age?	9
Prediagnostic Serum-25 Hydroxyvitamin D and Mortality Among Bladder Cancer Patients in the Janus Serum Bank Cohort: Answer to a Short Comment [Response to Letter]	9
Epidemiology of Invasive Candidiasis	9
Risk Stratification in Patients with Ischemic Stroke and Residual Cardiovascular Risk with Current Secondary Prevention	9
High Validity of the Danish National Patient Registry for Systemic Anticancer Treatment Registration from 2009 to 2019	9
Cancer Risk in Pulmonary Hypertension Patients	9
Incidence of Carpal Tunnel Syndrome Requiring Surgery May Increase in Patients Treated with Trigger Finger Release: A Retrospective Cohort Study	8
Registration of Amyotrophic Lateral Sclerosis: Validity in the Danish National Patient Registry	8
Cohort Profile: The Danish Venous Thromboembolism Cohort – A Linkage Between Danish National Health Surveys and Health Registers	8
Occupational Physical Activity Among Pregnant Employees in the Danish Workforce: The PRECISE Occupational Cohort Profile	8
Burden of Gastrointestinal Tumors in Asian Countries, 1990–2021: An Analysis for the Global Burden of Disease Study 2021	8
Genetically Predicted Serum Albumin and Risk of Colorectal Cancer: A Bidirectional Mendelian Randomization Study	8
Healthcare Utilization and Comorbidity in Chronic Lymphocytic Leukemia	8
Agreement Between Standard and ICD-10-Based Injury Severity Scores	8
Community Use of Repurposed Drugs Before and During COVID-19 Pandemic in the Netherlands: An Interrupted Time-Series Analysis	8
Adaptation of the Charlson Comorbidity Index for Register-Based Research in Sweden [Corrigendum]	8
Venous Thromboembolism and Risk of Cancer in Patients with Diverticular Disease: A Danish Population-Based Cohort Study	8
A Novel Chronic Kidney Disease Phenotyping Algorithm Using Combined Electronic Health Record and Claims Data	8
Feedback on “Recording of Alcohol Use Disorder in Electronic Health Records: Developing a Recommended Codelist for Research” [Letter]	8
Identification of Drugs Associated with Lower Risk of Parkinson’s Disease Using a Systematic Screening Approach in a Nationwide Nested Case–Control Study	8