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ClinicalTrials.gov public records Last synced Oct 28, 2026, 10:43 AM EDT

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Showing 1–24 of 291 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Epidemiology Clear all
Withdrawn No phase listed Observational

Analyzing Gene Regions That May Interact With the Effectiveness of High Blood Pressure Drugs

NCT00573092
View directory record Official record
Conditions
Myocardial Infarction, Cerebrovascular Accident, Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
30 Years to 79 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 9, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Intervention Study to Increase Smoking Cessation Rates Among Public Housing Residents

NCT01651611
View directory record Official record
Conditions
Tobacco Cessation
Interventions
Motivational interviewing, Smoking cessation counseling, Navigation to smoking cessation resources, Social support
Behavioral
Lead sponsor
Boston University
Other
Eligibility
18 Years to 79 Years
Enrollment
330 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 29, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Recruiting No phase listed Observational

Lynch Syndrome Integrative Epidemiology and Genetics

NCT06582914
View directory record Official record
Conditions
Lynch Syndrome
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2054
U.S. locations
2
States / cities
Aurora, Colorado • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 15, 2025 · Synced Oct 28, 2026, 10:43 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Post Pandemic Pneumococcal Carriage Among Children and Adults

NCT06373328
View directory record Official record
Conditions
Pneumococcal Carriage
Interventions
Not listed
Lead sponsor
University of Central Florida
Other
Eligibility
7 Months and older
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Dec 6, 2024 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Lifetime Risk for Cardiovascular Disease Among Non-White Ethnic Groups

NCT00377702
View directory record Official record
Conditions
Cardiovascular Diseases, Coronary Disease, Heart Failure, Congestive, Atrial Fibrillation
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
500,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 18, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Gut Microbiota, Short Chain Fatty Acids, and Adiposity Across The Epidemiological Transition

NCT03378765
View directory record Official record
Conditions
Obesity, Diabetes
Interventions
Diet and physical activity monitoring
Behavioral
Lead sponsor
Loyola University
Other
Eligibility
18 Years to 50 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Oct 28, 2026, 10:43 AM EDT
Active, not recruiting No phase listed Observational

Delirium in Children Undergoing Stem Cell Transplantation

NCT04937400
View directory record Official record
Conditions
Stem Cell Transplant Complications, Delirium
Interventions
Daily screening for delirium
Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
Up to 21 Years
Enrollment
1,040 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
5
States / cities
San Francisco, California • Boston, Massachusetts • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2026 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of Silicone-Associated Connective Tissue Diseases

NCT00001330
View directory record Official record
Conditions
Autoimmune Diseases, Connective Tissue Diseases, Scleroderma, Circumscribed, Scleroderma, Systemic
Interventions
Not listed
Lead sponsor
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
NIH
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

Mechanisms of Resistance and Molecular Epidemiology of Commonly Encountered Multi-Resistant Bacteria

NCT00275327
View directory record Official record
Conditions
Bacterial Infection
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2015 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

Epidemiologic Follow Up Study of Newly Diagnosed Epilepsy Among Seniors

NCT01351727
View directory record Official record
Conditions
Epileptic Seizures
Interventions
Not listed
Lead sponsor
University of Arizona
Other
Eligibility
65 Years and older
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 28, 2026, 10:43 AM EDT
Enrolling by invitation No phase listed Observational

Evaluation of Lymphoma Prognosis and Survivorship in Recently Diagnosed Patients, LEO Study

NCT04996706
View directory record Official record
Conditions
Lymphoma, Non-Hodgkin
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
21,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2031
U.S. locations
12
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 28, 2026, 10:43 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Ascertainment of Peripheral Blood or Saliva Samples for Genetic Epidemiology Studies of Familial Cancers

NCT00579163
View directory record Official record
Conditions
Breast Neoplasms, Ovarian Neoplasms, Colonic Neoplasms, Prostatic Neoplasms, Uterine Cervical Neoplasms, Leukemia, Lymphoma, Non-Hodgkin
Interventions
Not listed
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
Not listed
Enrollment
992 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1994 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Results available

S1204, Viral Screening in Newly Diagnosed Cancer Patients

NCT01946516
View directory record Official record
Conditions
Cancer
Interventions
Not listed
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
3,051 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
58
States / cities
Fontana, California • Harbor City, California • Martinez, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Results available

Priapism in Boys and Men With Sickle Cell Disease - Demographics, Characteristics and Prevalence

NCT00300235
View directory record Official record
Conditions
Priapism, Anemia, Sickle Cell
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
5 Years and older · Male only
Enrollment
1,464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
27
States / cities
Mobile, Alabama • Davis, California • Oakland, California + 16 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2019 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

A Cross-Functional, Population-Representative, Web-Based, Epidemiologic Study to Estimate the Prevalence and Burden of Nocturia Due to Nocturnal Polyuria in the US

NCT04125186
View directory record Official record
Conditions
Nocturnal Polyuria
Interventions
Baseline EpiNP survey, Bladder diary, Testing of EpiNP baseline survey, bladder diary and a qualitative interview, No other intervention
Diagnostic Test · Other
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
30 Years and older
Enrollment
10,190 participants
Timeline
2019 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Deployment Related Mild Traumatic Brain Injury (mTBI)

NCT01847040
View directory record Official record
Conditions
Mild Traumatic Brain Injury
Interventions
Not listed
Lead sponsor
The Defense and Veterans Brain Injury Center
Federal
Eligibility
18 Years and older
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
2
States / cities
Fort Carson, Colorado • Fort Bragg, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

Identification of Early Predictors of Fetomaternal Hemorrhage

NCT01232387
View directory record Official record
Conditions
Fetomaternal Hemorrhage, Neonatal Anemia
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
Up to 60 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 20, 2013 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

Genetic Epidemiology of Primary Biliary Cirrhosis (PBC)

NCT01161953
View directory record Official record
Conditions
Primary Biliary Cirrhosis
Interventions
Genetic Analysis
Genetic
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Oct 28, 2026, 10:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Legume Diet Satiety Pilot Study

NCT02269631
View directory record Official record
Conditions
Obesity, Colorectal Carcinoma
Interventions
Legume diet group, Control diet group, Smartpill, legumes
Behavioral · Device · Other
Lead sponsor
Emory University
Other
Eligibility
40 Years to 70 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 25, 2019 · Synced Oct 28, 2026, 10:43 AM EDT
Withdrawn No phase listed Observational

The Lymphoma Epidemiology of Outcomes (LEO) Cohort Study

NCT02736357
View directory record Official record
Conditions
Non-Hodgkin Lymphoma
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
8
States / cities
Miami, Florida • Atlanta, Georgia • Iowa City, Iowa + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

Epidemiology and Treatment Patterns of Paediatric PAH (Pulmonary Arterial Hypertension)

NCT02576002
View directory record Official record
Conditions
Hypertension, Pulmonary
Interventions
Assigned pulmonary hypertension medication
Drug
Lead sponsor
Bayer
Industry
Eligibility
Up to 18 Years
Enrollment
2,691 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 26, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Genetic Epidemiology Risk Assessment Program or Usual Care in Colorectal Cancer Screening for Healthy Participants

NCT00478309
View directory record Official record
Conditions
Colorectal Cancer, Healthy, no Evidence of Disease
Interventions
counseling intervention, educational intervention
Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
50 Years and older
Enrollment
697 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 3, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational Results available

Molecular Epidemiology of Clostridium Difficile Infections in Children

NCT01957761
View directory record Official record
Conditions
Clostridium Difficile Infections
Interventions
Not listed
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
1 Year to 18 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2016 · Synced Oct 28, 2026, 10:43 AM EDT
Completed No phase listed Observational

S0424 - Carcinogens in Lung Tissue From Smokers (Closed to Entry as of 7/15/07) and Non-Smokers With Newly Diagnosed Stage I, Stage II, or Stage III Non-Small Cell Lung Cancer

NCT00450281
View directory record Official record
Conditions
Lung Cancer
Interventions
chromogenic in situ hybridization, gene expression analysis, mutation analysis, polymerase chain reaction, polymorphism analysis, fluorescent antibody technique, immunohistochemistry staining method, laboratory biomarker analysis, matrix-assisted laser desorption/ionization time of flight mass spectrometry, study of socioeconomic and demographic variables, study of high risk factors
Genetic · Other · Procedure
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years to 120 Years
Enrollment
981 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
405
States / cities
Anchorage, Alaska • Tucson, Arizona • Fort Smith, Arkansas + 279 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2015 · Synced Oct 28, 2026, 10:43 AM EDT