Clinical trials: Prevalence
Vitamin D Status, Healthy
Comparison of the Efficacy of Calcium-cholecalciferol Foodstuffs and Calcium-cholecalciferol Supplement
This study is conducted in two phases. At the first phase, the prevalence of vitamin D insufficiency in primary school-children in Tehran is determined during the cold seasons of 2008.
- Trial name
- NCT00864539
- Testing
- fortified milk, plain milk, fortified orange juice
- Volunteers
- 585 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Obstructive Sleep Apnea Syndrome, Restless Leg Syndrome
Prevalence of OSAS in Chinese Elderly and Its CPAP Compliance
Objective: Obstructive sleep apnoea syndrome (OSAS) is a common form of sleep-disordered breathing (SDB) causing sleep fragmentation, daytime sleepiness, cognitive function impairment, and poor health status in addition to…
- Trial name
- NCT02085720
- Testing
- CPAP therapy
- Where
- Hong Kong
- Volunteers
- 819 people, healthy volunteers welcome
- Sponsor
- Chinese University of Hong Kong
Renal Artery Stenosis
Prevalence of Renal Artery Stenosis in Patients Referred for Cardiac Catheterization
All patients referred for coronary angiography will simultaneously be evaluated for renal artery stenosis and then stenosis more than 50% will be analyzed according to clinical conditions, risk factors and lab data.
- Trial name
- RAS (NCT00885768)
- Testing
- angiography
- Where
- Iran
- Volunteers
- 146 people
- Sponsor
- Imam Khomeini Hospital
Chronic Obstructive Pulmonary Disease, Noninvasive Ventilation
Determination of the Prevalence and Severity of Expiratory Flow Limitation in Chronic Obstructive Pulmonary Disease Patients
Expiratory Flow Limitation (EFL) occurs when the airways become compressed, which usually results when the pressure outside the airway exceeds the pressure inside the airway.
- Trial name
- NCT03851510
- Testing
- Vector ventilator, Resmon Pro
- Where
- United States
- Volunteers
- 57 people
- Sponsor
- Philips Respironics
Priapism, Anemia, Sickle Cell
Priapism in Boys and Men With Sickle Cell Disease - Demographics, Characteristics and Prevalence
Priapism, a prolonged erection of the penis, is a medical issue that often affects men with sickle cell disease. The purpose of this study is to collect demographic and clinical information on priapism by interviewing men with…
- Trial name
- NCT00300235
- Where
- 27 sites in United States
- Volunteers
- 1,464 people
- Sponsor
- University of Texas Southwestern Medical Center
Neurogenic Bladder, Spinal Cord Injuries
Gentamicin Bladder Instillation in Individuals With Spinal Cord Injury Having Chronic Urinary Tract Infections
Participants will undergo daily gentamicin bladder instillations to determine if its use will reduce the rate of symptomatic urinary tract infections (UTIs) as well as the use of oral and intravenous antibiotics in adults with…
- Trial name
- NCT03931408
- Testing
- Gentamicin Sulfate, No instillation
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- University of Louisville
Lynch Syndrome
Colonoscopy Check-up in People With Lynch Syndrome
Lynch syndrome, an inherited condition, increases bowel cancer risk. People with Lynch syndrome are recommended to have regular colonoscopies where a camera in a tube is used to look inside the bowel for cancer and for polyps…
- Trial name
- NCT06126120
- Where
- United Kingdom
- Volunteers
- 231 people
- Sponsor
- Imperial College London
Pulmonary Disease, Chronic Obstructive
Airway Limitation Study: Study In Primary Care Centers Of Chronic Bronchitis In Long-Term Cigarette Smokers Of At Least 40 Years Of Age With Symptoms Of Cough And Shortness Of Breath
The study does not involve testing of a drug (no treatment intervention). The study will will use spirometry (breathing tests) in subjects of 40 years of age and older with a history of cigarette smoking with chronic bronchitis…
- Trial name
- NCT00442468
- Testing
- Non-interventional study.
- Where
- 47 sites in United States
- Volunteers
- 1,283 people
- Sponsor
- GlaxoSmithKline
Non-allergic Rhinitis
The Prevalence of Local Immunoglobulin E (IgE) Elevation and Its Effect on Intranasal Capsaicin Therapy in the Non-allergic Rhinitis Population
The purpose of this study to determine the therapeutic response of non-allergic rhinitis patients that have been subtyped as non-allergic rhinitis with local IgE elevation or non-allergic rhinopathy to intranasal capsaicin based…
- Trial name
- NCT05093478
- Testing
- Intranasal capsaicin, topical lidocaine
- Where
- United States
- Volunteers
- 28 people
- Sponsor
- The University of Texas Health Science Center, Houston
Anemia
Prevalence and Treatment of Anemia in Rehabilitation Patients
Patients who are admitted to subacute rehabilitation facilities following hospitalization are frequently anemic. The purpose of this study is to see if anemic patients treated with epoetin alfa will have higher hemoglobin levels…
- Trial name
- NCT00511901
- Testing
- epoetin alpha, Niferex
- Where
- 2 sites in United States
- Volunteers
- 22 people
- Sponsor
- University of Medicine and Dentistry of New Jersey
Metabolic Syndrome
Effects of Ezetimibe, Simvastatin, and Vytorin on Reducing L5 a Subfraction of LDL in Patients With Metabolic Syndrome.
The purpose of this study is: To identify the common factor for L5 prevalence in patients with Metabolic Syndrome. To determine whether Ezetimibe, Simvastatin, and Vytorin can correct the L5- promoting factor and reduce L5 in…
- Trial name
- Merck-123 (NCT00988364)
- Testing
- Simvastatin, Vytorin, Ezetimibe
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Baylor College of Medicine
Sleep Apnea, Obstructive
Oxygen Saturation Monitoring During Surgery
Patients with Obstructive Sleep Apnea (OSA) have cyclical patterns of lower blood oxygen during sleep because of repeated episodes of upper airway obstruction that cause their breathing to stop.
- Trial name
- NCT01098851
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- Medtronic - MITG
Hyperbilirubinemic Encephalopathy
Determining Prevalence of Acute Bilirubin Encephalopathy in Developing Countries
The investigators hypothesize that a new BIND (Bilirubin Induced Neurologic Dysfunction) scoring method adapted for the developing world (BIND II, developed by our team for use by health care workers), with additional…
- Trial name
- NCT01754688
- Where
- Nigeria
- Volunteers
- 624 people
- Sponsor
- University of Minnesota
Nonalcoholic Steatohepatitis
Prevalence of Non-alcoholic Fatty Liver Disease (NAFLD) in Hispanics With Diabetes Mellitus Type 2 (T2DM) and Role of Treatment
Nonalcoholic fatty liver disease (NAFLD) is a chronic liver condition frequently associated with type 2 diabetes (T2DM) and characterized by insulin resistance and hepatic fat accumulation.
- Trial name
- VA NASH (NCT01002547)
- Testing
- pioglitazone, Vitamin E
- Where
- 2 sites in United States
- Volunteers
- 105 people
- Sponsor
- VA Office of Research and Development
Type 2 Diabetes Mellitus
A Study Using Swedish Registries to Find Out How Many People With Type 2 Diabetes Had Cardiovascular Disease and Started Treatment With Empagliflozin Between 2015 and 2017
This study aims to describe the prevalence of type 2 diabetes mellitus (T2DM) patients with established cardiovascular disease (CVD) according to the (Empagliflozin) Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus…
- Trial name
- NCT04927858
- Testing
- Empagliflozin
- Where
- Sweden
- Volunteers
- 460,558 people
- Sponsor
- Boehringer Ingelheim
HIV Infections, Memory
Prevalence and Predictors of Neurocognitive Impairment Among HIV-infected Patients
Despite the advent of highly active antiretroviral therapy (HAART), the prevalence of neurocognitive impairment among HIV-infected patients continues to be an important issue.
- Trial name
- NCT00893815
- Where
- 3 sites in United States
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Henry M. Jackson Foundation for the Advancement of Military Medicine
Dry Eyes
Prevalence of Dry Eyes in Diabetics Compared to Non Diabetics
The purpose is to compare the prevalence of dry eyes in diabetics and non diabetics. This might help identify a group of patients at greater risk for dry eye complications.
- Trial name
- NCT01450787
- Where
- United States
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- COA Research Foundation, INC
Rheumatoid Arthritis, Depression
Depression and Anxiety in Rheumatoid Arthritis
The primary endpoint of this study is to evaluate the prevalence of anxiety and depressive disorders, and their relationship with disease activity, in patients with rheumatoid arthritis treated with biological drugs
- Conditions
- Rheumatoid Arthritis, Depression, Anxiety
- Trial name
- DEAR (NCT02122406)
- Testing
- Hospital Anxiety and Depression Scale (HADS) questionnaire
- Where
- Italy
- Volunteers
- 200 people
- Sponsor
- University of Pavia
HIV Infection
Evaluation of Rapid HIV Self-testing Among MSM (eSTAMP)
This study seeks to determine the public health impact of providing rapid HIV test kits to men who have sex with men (MSM) so they may test themselves at their convenience.
- Trial name
- NCT02067039
- Testing
- OraQuick in home & Sure Check HIV tests
- Where
- United States
- Volunteers
- 2,665 people, healthy volunteers welcome
- Sponsor
- Centers for Disease Control and Prevention
HIV Infections, Tuberculosis
Characteristics and Prevalence of Tuberculosis and HIV in Masiphumelele Township, Cape Town, South Africa
The purpose of this study is to determine the number of people infected with tuberculosis (TB) in the Masiphumelele Township of Cape Town, South Africa, a community with high rates of TB and HIV.
- Trial name
- NCT00346476
- Where
- 2 sites in South Africa
- Volunteers
- 1,250 people, healthy volunteers welcome
- Sponsor
- CIPRA SA