| Not Yet Recruiting | Prevention and Mass Screening of TB in Prisons in Paraguay NCT07520448 | Universidad Nacional de Caaguazu | N/A |
| Enrolling By Invitation | Assessment of Worldwide Acute Kidney Injury Epidemiology in Neonates 2.0 NCT06823115 | Indiana University | — |
| Active Not Recruiting | Onco-Respirology Epidemiology Based on Real-world Big Data in Respiratory Medicine NCT06670560 | Zhou Chengzhi | — |
| Completed | Epidemiological Studies and Risk Factor Analysis of GERD in Xiamen City NCT06585176 | Zhongshan Hospital (Xiamen), Fudan University | — |
| Recruiting | Epidemiology of Road Traffic Accidents in Riyadh Region in the Last Five Years (2019-2023) NCT06553586 | Assiut University | — |
| Recruiting | Argentine Registry of Crohn's Disease and Ulcerative Colitis NCT07155148 | Grupo Argentino de Enfermedad de Crohn y Colitis Ulcerosa | — |
| Unknown | Mapping Snakebite Risk in Kenya and Eswatini NCT06124872 | Liverpool School of Tropical Medicine | — |
| Unknown | Study on the Epidemiological Characteristics of Female HPV Vaccination in China NCT05932563 | Fujian Maternity and Child Health Hospital | — |
| Completed | Evaluation of Prevalence of Sexuality Alteration in Women With an Abnormal Pap Test NCT05701020 | Centre Hospitalier Universitaire, Amiens | N/A |
| Completed | The Prevalence of Healthcare-associated Infection in Medical Intensive Care Units in Tunisia NCT05547646 | Abderrahmane Mami Hospital | — |
| Completed | An 18-year Follow-up Study on OSA in a Population-based Cohort NCT05077748 | Chinese University of Hong Kong | — |
| Completed | Post-COVID-19 Monitoring in Routine Health Insurance Data NCT05074953 | Technische Universität Dresden | — |
| Unknown | Cross-sectional Survey of Zhejiang ECMO Application NCT04979325 | Second Affiliated Hospital, School of Medicine, Zhejiang University | — |
| Recruiting | Coronary Artery Calcification in Type 2 Diabetes Mellitus (USCAC Study) NCT04889053 | University of South China | — |
| Completed | Verification of the Epidemiology and Mortality of Rare Diseases in Taiwan With Real-world Evidence NCT05367115 | National Cheng-Kung University Hospital | — |
| Completed | Prognostic Factors and Outcomes of COVID-19 Cases in Ethiopia NCT04584424 | Ethiopian Public Health Institute | — |
| Completed | Interactive Self-Management Augmented by Rehabilitation Technologies NCT04743037 | Washington University School of Medicine | N/A |
| Unknown | Achromobacter Spp: Description of Epidemiology and Resistance in Chronic Ear Infections and in Healthy Individ NCT04483232 | Centre Hospitalier Universitaire Dijon | — |
| Unknown | French Single Centre Experience of Critically Ill Patients With Covid 19 NCT04354558 | Centre Hospitalier Universitaire, Amiens | — |
| Completed | Analysis of Emergency Department Visits According to Incidence of Covid-19 NCT05126641 | Centre Hospitalier de Roubaix | — |
| Unknown | Prevalence, Phenotypes, Predictors and Prognostic Implication of Obstructive Sleep Apnea in Pulmonary Hyperten NCT05595200 | Chinese Pulmonary Vascular Disease Research Group | — |
| Completed | Prevalence of Carotid Artery Stenosis and Abdominal Aortic Aneurysms in Brussels: a Population-based Screening NCT04098523 | Erik Debing | N/A |
| Completed | Mechanical Ventilation Epidemiology in Argentina. NCT04107467 | Argentinian Intensive Care Society | — |
| Completed | Opposition to Diagnostic or Therapeutic Procedures by Aged Hospitalized Patient NCT03373838 | Centre Hospitalier Universitaire de Besancon | — |
| Completed | Epidemiology of Hepatitis B, C and D and HIV Along the Maroni River Bordering French Guiana and Suriname (MaHe NCT05002907 | Centre Hospitalier de Cayenne | — |
| Completed | Staphylococcus Aureus Surgical Site Infection Multinational Epidemiology in Europe NCT03353532 | University of Cologne | — |
| Completed | Severe Leptospirosis in Non-tropical Areas NCT03912506 | Nantes University Hospital | — |
| Completed | Human Movement Patterns on the Thailand-Myanmar Border NCT03087214 | University of Oxford | — |
| Completed | Sixteen Years Trends in Reported Undernutrition in Switzerland NCT03239093 | Centre Hospitalier Universitaire Vaudois | — |
| Completed | Acute Kidney Injury After Craniotomy NCT03789747 | Beijing Tiantan Hospital | — |
| Unknown | Epidemiology of Malaria in Ubon Ratchathani, Thailand NCT02991963 | University of Oxford | — |
| Completed | Microbiological Epidemiology in Patients Experiencing Microbiological or Clinical Failure Following Reimplanta NCT03627000 | Hospices Civils de Lyon | — |
| Completed | Epidemiology of Breast Cancer in Women Based on Diagnosis Data From Oncologists and Breast Surgeons in Algeria NCT02733601 | AstraZeneca | — |
| Completed | Prevalence of Malaria Parasites in People Working in Illegal Gold Mining in French Guiana NCT02903706 | Centre Hospitalier de Cayenne | — |
| Unknown | Estimation of Disability Adjusted Life Years in Reunion Island and Comparison to Metropolitan France and Other NCT02905500 | Centre Hospitalier Universitaire de la Réunion | — |
| Active Not Recruiting | Diet, Physical Activity and Related Candidate Biomarkers in Relation to Prostate Cancer Risk (BIOCaPPE) NCT03383016 | CHU de Quebec-Universite Laval | — |
| Recruiting | Epidemiology of Inflammatory Bowel Disease in the Songpa-Kangdong District, Seoul, Korea. NCT01731665 | Asan Medical Center | — |
| Withdrawn | A Semi-Factorial Cluster-Randomized Trial to Estimate the Effect Size of Community Mobilization and VCT Vans o NCT01160575 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Unknown | Human Papillomavirus (HPV) in Squamous Cell Carcinoma of the Head and Neck NCT01079546 | Tel-Aviv Sourasky Medical Center | — |
| Completed | National Cancer Institute Food Study NCT00978406 | National Cancer Institute (NCI) | — |
| Completed | Perceptions of Cervical Cancer Among Asian Americans NCT00518388 | M.D. Anderson Cancer Center | — |
| Completed | Cancer Markers Associated With Occupational Exposure to Trichloroethylene NCT00481611 | National Cancer Institute (NCI) | — |
| Completed | Association of Formaldehyde Exposure to Myeloid Leukemia in Workers in Guangdong, China NCT01338285 | National Cancer Institute (NCI) | — |
| Completed | MATCh Parents' Supplemental Survey NCT00487357 | M.D. Anderson Cancer Center | — |
| Completed | Genetic Susceptibility in Migrant Farmworker Children NCT00501280 | M.D. Anderson Cancer Center | — |
| Completed | Clinical Study of SARS in Children NCT00173576 | National Taiwan University Hospital | — |
| Completed | Anticholinergic Risk Scale and Resource Use After Elective Noncardiac Surgery NCT03151616 | Ottawa Hospital Research Institute | — |
| Completed | Polypharmacy and Outcomes After Elective Noncardiac Surgery NCT03133182 | Ottawa Hospital Research Institute | — |
| Completed | The Impact of Perioperative Geriatric Care on Outcomes After Elective Noncardiac Surgery NCT02975375 | Ottawa Hospital Research Institute | — |
| Unknown | Natural History and Patient Journey in Atrial Fibrillation: a Nationwide Linked Electronic Health Records Stud NCT04786366 | University College, London | — |
| Completed | Juvenile Idiopathic Arthritis in Children in Estonia. NCT01905319 | University of Tartu | — |
| Completed | Stroke Incidence and Risk Factors in a Tri-ethnic Region NCT03266952 | University of Miami | — |
| Recruiting | Analysis of the Evolution of Mortality in an Intensive Care Unit NCT05261607 | Hospital Universitario Getafe | — |