There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The COVID-19 pandemic has highlighted deleterious US health inequities. Specifically, African Americans, Latinos, and Native Americans have and continue to shoulder a greater burden of COVID-19 infections and deaths in the US. In addition to existing racial and ethnic disparities are rural health and regional disparities. Given the disproportionate impact of disease in US communities of color and also in rural and southern regions of the US, there is no doubt that these at-risk subgroups will continue to experience higher rates of coronavirus-related mortality as well as other long-term health outcomes as compared to other US populations. It is unknown how healthcare providers and other key at-risk subgroups within the US will receive COVID-19 vaccines. For success in immunizations, the US will need to reach their most at-risk and vulnerable populations. In addition to at-risk populations, a successful immunization strategy will involve engaging providers to support clear, consistent, and strong vaccine recommendation. It is critical to build vaccine trust, confidence, and overall acceptance of COVID-19 vaccines among healthcare providers and key at-risk subgroups, especially given the accelerated production timeline of these vaccines. Likewise, tailored vaccine messaging for key subgroups is vital in achieving vaccine confidence and trust. The proposed study will explore perceptions, confidence, trust, and uptake of potential COVID-19 vaccines among healthcare providers (nurses and doctors) and key at-risk population subgroups (minority populations living in the rural south) and will develop and test vaccine messaging that boosts vaccine confidence and trust among these key at-risk subgroups.
This is an early Phase 1 study to establish proof-of-concept by determining whether an intravaginal film containing a human contraceptive antibody (ZB-06) shows promise to provide contraceptive efficacy using the post-coital test, a surrogate measure of efficacy. The study will also evaluate the safety and pharmacokinetics of ZB-06.
Cannabidiol (CBD) is one of 700 chemicals derived from the Cannabis sativa plant and is both legal and widespread for distribution in the state of Vermont. The central hypothesis of this proposal is that in apparently healthy adults, acute CBD favorably affects the autonomic nervous system and that this will be evident by an increase in heart rate variability. The overall goal is to understand how CBD affects the autonomic and cardiovascular systems at rest, and when perturbed. The investigators will study a narrow age range of adults, administer varying acute doses of CBD, characterize baseline cardiovascular variables, and record responses to autonomic challenge maneuvers. This will provide the framework to assess potential therapies and/or risk factors of CBD, particularly as it relates to healthy individuals. More information that is so widely taken, especially one that targets receptors known to be involved in cardiovascular signaling pathways is imperative.
Results from the University of Nottingham suggested that rhythmic median nerve stimulation (MNS) improves tic symptoms in Tourette syndrome (TS). The investigators will (1) provide a first replication of their study, (2) test the hypothesized electrophysiological mechanism and rule out a placebo effect as cause for the symptomatic benefit, and (3) gather information on the duration of effect after the end of stimulation and on individual characteristics that predict improvement with simulation. Completion of these Aims will give a clear go/no-go signal for a future clinical trial of chronic MNS delivered by a yet-to-be-developed wristwatch-style device. NOTE: This study is not intended to evaluate a specific device for future use. Rather it is a study to determine the action of pulsed electrical stimulation on tic symptoms and to gain early evidence of effectiveness. This is a non-significant risk device study.
Usability evaluation of BrightGo cognitive telerehabilitation system. An experimental system was developed to enhance standard of care (medication effect) for Early Alzheimer's Disease populations. This computerized system will be undergo a usability evaluation by healthy and by elderly participants who are in the early phase of Alzheimer's Disease. Sessions will and with participants filling subjective evaluation questionnaires as well as the USE standardized form. Results will be used to address any uncovered issues before a follow on Pilot RCT Feasibility study. Participants will receive $25 after each evaluation session.
ED GOAL is a 6-minute, motivational interviewing, advance care planning intervention. In this study, the investigators will pilot test (Part I) ED GOAL by training research nurses to demonstrate its intervention fidelity and acceptability on older adults with serious illness in the emergency department (ED). Upon demonstrating the intervention fidelity of this intervention in Part I, the investigators will collect patient-centered outcomes (Part II) of 100 older adults with serious illness after leaving the ED. Further in Part III, the investigators will conduct a survey to the participants' outpatient clinicians to find out how to optimize the care coordination from the ED to the outpatient office to facilitate advance care planning conversations.
The purpose of this study is to determine whether treatment with Dapagliflozin (DAPA) for 6 months will improve pulmonary capillary wedge pressure (PCWP) during exercise in heart failure/preserved ejection fraction (HFpEF) and improve cardiac metabolism.
The main purpose of this study is to assess the ability of a repeated high-frequency site-based computerized cognitive assessment to evaluate the potential treatment effects of donepezil (MK-0000) compared with placebo among participants with mild cognitive impairment (MCI) or mild Alzheimer's Disease (AD). The primary study hypothesis is that the average percentage of correct responses on one card learning (OCL) task will be ≥2 percentage points in participants receiving donepezil compared with participants receiving placebo.
OA is a degenerative joint disease that involves the degradation of articular cartilage and underlying subchondral bone. Obesity is identified as a critical and potentially modifiable risk factor for the development and progression of OA. The first objective of the study is to determine the effects of obesity on cartilage composition and function. The second objective of the study is to determine whether weight loss restores cartilage composition and function. Study activities would require getting MR Imaging, evaluation of joint loading using gait analysis techniques, cartilage strain measurement, and participating in weight loss intervention. The study will target a population age group between 18 and 45 years with a BMI greater than or equal to 29. Data analyses will be blinded to reduce potential bias. All subjects participating in this study will be informed of the risks involved and sign an IRB-approved consent form.
Caffeine is the most commonly used stimulant drug with well documented effects on cerebral vascula-ture. Caffeine is known to non-specifically bind to adenosine receptors in the brain and to reduce resting blood flow while improving attention and cognitive function, which suggests that it may allow a more efficient dynamic blood flow regulation through neurovascular coupling. This study will use standardized dose of caffeine to test its effect on NVC responses in cerebral and retinal arterioles.