Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,162 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07725146Recruiting
Lipedema symptom questionnaire validation study
This study is testing a new questionnaire to better understand lipedema symptoms in women. If you have been diagnosed with lipedema, your answers could help improve care for others with the condition.
Istanbul, KadıköyAges 18–75 - NCT06630182Recruiting
Does personality affect diabetic foot wound healing?
This study looks at how your feelings and personality might affect the healing of a diabetic foot wound. Researchers will ask you to complete questionnaires about your emotional state to see if there is a link to wound recovery.
DijonAges 18–18 - NCT07488377Recruiting
Cognitive Self-Confidence in Parkinson's Disease
This study tests a new questionnaire to measure how confident people with Parkinson's feel about their thinking and memory. It may help doctors better understand and support cognitive changes in Parkinson's.
Istanbul, TurkeyAges 40–85 - NCT03371641Recruiting
Study of alcohol exposure effects in unborn babies
This study looks at unborn babies exposed to alcohol during pregnancy and compares them with babies not exposed. Researchers test a pregnancy blood marker to see whether it may relate to early brain changes in the baby.
RouenAges 18 years+ - NCT04396002Recruiting
Study of life movement and vision loss in older adults
This study looks at whether how far and how much you move around each day is linked to glaucoma and vision field loss in older adults. It may help researchers understand what affects vision changes over time.
Birmingham, AlabamaAges 18–100 - NCT04615988Recruiting
Vitamin D levels and hormone side effects from immune cancer therapy
This study looks at whether your blood vitamin D level is linked to hormone-related side effects caused by immune checkpoint cancer drugs. It may help doctors better predict who is at risk and how to monitor patients during treatment.
New York, New YorkAges 18 years+ - NCT04678167Recruiting
Special “ring” glasses for vestibular neuritis symptoms
This trial tests whether wearing “ring” glasses helps reduce symptoms from vestibular neuritis, a condition that causes spinning vertigo and balance problems. Participants may get the glasses being tested or look-alike placebo glasses (or not wear glasses), so the study can tell if the glasses truly help.
BrestAges 18 years+ - NCT04730622Recruiting
Studying muscle and bone changes after a hip fracture
This study looks at how bone health and muscle strength (“osteosarcopenia” — loss of both bone and muscle) change after a hip fracture in older adults. It may help doctors understand who is at higher risk and how to better support recovery after hip surgery.
BolognaAges 65 years+ - NCT02604563Recruiting
Aging, blood changes, and health in older adults
This study examines why some older adults develop changes in their blood cells that may affect their health. Researchers will look for links between these blood changes, aging, and common health problems in older people.
St Louis, MissouriAges 50 years+ - NCT05002751Recruiting
Measuring how radiation affects vaginal narrowing in cervical cancer
This study measures how radiation therapy changes the vagina’s flexibility and shape in people with newly diagnosed, advanced cervical cancer that has spread to nearby lymph nodes. The goal is to better understand what happens over time, which may help guide prevention and treatment of vaginal narrowing.
La Jolla, CaliforniaAges 18–99 - NCT05207098Recruiting
Brain testing and questionnaires during head and neck radiation
This study checks how people’s thinking and brain functioning change while they are getting radiation therapy for head and neck cancer. It uses simple computer tests and questionnaires to better understand who may be at risk for trouble thinking during treatment.
Basking Ridge, New JerseyAges 18–89 - NCT05293769Recruiting
Food diary questionnaire test for IBS and activity levels
This study checks whether a food questionnaire can reliably estimate what you eat, including certain carbs that can affect digestion (FODMAPs). It also looks at how the results relate to IBS symptoms and your self-reported physical activity.
Jette, Brussels CapitalAges 18–65 - NCT05533645Recruiting
Questionnaire study about salt (sodium) intake
This study asks people to report how much salt they eat so researchers can better understand sodium intake in people with high blood pressure and/or advanced kidney disease. It may help improve how salt-related health risks are assessed, though it mainly involves questionnaires and scheduled participation.
LilleAges 18 years+ - NCT05595577Recruiting
Personalized exercise program to improve fitness during cancer care
This trial tests whether a tailored, home-based exercise plan can improve exercise capacity (how far and how safely you can be active) in people receiving cancer treatments that may affect the heart. It may help you build safer stamina while monitoring your heart health.
Winston-Salem, North CarolinaAges 18–85 - NCT05651919Recruiting
Blood test study to understand diabetic heart weakness
This study measures immune cells from your blood to find markers (biomarkers) that may explain or predict diabetic cardiomyopathy, a type of heart condition linked to diabetes. You may benefit mainly by being closely monitored and contributing to research that could improve future diagnosis or risk tracking.
BronAges 40–85 - NCT05662293Recruiting
Study of heart muscle weakness caused by abnormal heart rhythms
This study looks at a condition where an abnormal heart rhythm can weaken the heart muscle (arrhythmia-induced cardiomyopathy). You may be asked questions, have heart tests reviewed, and help researchers better describe who is affected and how it develops.
BaselAges 18 years+ - NCT05765864Recruiting
Study of self-harm in at-risk teens
This study looks at self-harm and thoughts/behaviors related to safety in teenagers who are considered at higher risk. It may help researchers better understand what supports are needed for teens who self-harm without wanting to die.
LjubljanaAges 13–18 - NCT05922007Recruiting
Study of chronic pain effects on daily life
This study looks at how long-lasting pain and its treatment affect quality of life and physical activity. It asks people to complete questionnaires to understand what changes over time.
Ostrava, Moravian-Silesian RegionAges 18–65 - NCT05928598Recruiting
Learning goals for epilepsy clinic visits
This study asks adults with hard-to-control epilepsy to share what goals they want from their epilepsy clinic visits. It may help the clinic improve visit planning to better support patients day to day.
Ann Arbor, MichiganAges 18 years+ - NCT05945212Recruiting
Vibration therapy to help leg recovery after subacute stroke
This study tests whether a program using local vibrations on the muscles in the front of your ankle can improve leg nerve and movement recovery after stroke. It may help people who have weak ankle lifting during the weeks to months after stroke.
Le Chambon-FeugerollesAges 18–80 - NCT06083636Recruiting
Better lab tests for people with hypothyroidism on levothyroxine
This study aims to improve lab tests for people with hypothyroidism who take levothyroxine. It compares their test results to healthy volunteers to see if doctors can make more accurate diagnoses.
Amsterdam, North HollandAges 18–100 - NCT06244641Recruiting
New Model for Relapse in Alcohol Use Disorder
This study is testing a new way to understand and predict relapse in people with alcohol use disorder. If you're currently hospitalized for this condition, researchers want to learn from your experience to improve care.
Brussels, Brussels CapitalAges 18 years+ - NCT06284382Recruiting
Early trauma and brain smell test study
This study looks at how early childhood trauma affects brain chemistry, specifically a chemical called dopamine, during smelling tasks. You will have brain scans and smell tests to see if your brain reacts differently.
BronAges 18–30 - NCT06858761Recruiting
Robot-assisted weight loss surgery: cost and results study
This study looks at whether using a robot during weight loss surgery is worth the cost. It compares outcomes for people having their first bariatric surgery or a repeat surgery for complications.
BordeauxAges 18–70
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,162 recruiting questionnaire studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a questionnaire trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a questionnaire trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.