Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,163 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07001891Recruiting
Brain activity study for restless legs syndrome
This study looks at brain connections related to body awareness in people with restless legs syndrome (RLS). It may help researchers understand RLS better.
BordeauxAges 18–70 - NCT07028372Recruiting
Long-term follow-up of cardiac arrest survivors who had ultra-rapid cooling
This trial checks on the long-term health of people who survived a cardiac arrest and received ultra-rapid cooling as part of an earlier study (OverCool). The goal is to see how they are doing over time.
AngersAges 18 years+ - NCT07029152Recruiting
Anal cancer screening for gay and bisexual men on PrEP
This study is screening gay and bisexual men for anal cancer by taking a swab sample. It aims to find early signs of cancer so it can be treated early.
BrugesAges 35 years+ - NCT07067827Recruiting
Osteoporosis survey for clinic patients
This trial tests a self-questionnaire for people with osteoporosis who are already being followed at certain clinics. It aims to see if the questionnaire helps manage the condition.
Québec, QuebecAges 18 years+ - NCT07120789Recruiting
Understanding pulmonary hypertension knowledge questionnaire
This study aims to validate a questionnaire that measures how well patients understand pulmonary hypertension. If you have been diagnosed with Group 1 Pulmonary Arterial Hypertension (PAH) and can read the questionnaire, you may be able to help researchers make sure it's a useful tool.
São Paulo, São PauloAges 18 years+ - NCT07130630Recruiting
Pain and activity confidence in Vietnamese knee osteoarthritis
This study tests a questionnaire that measures how confident people with knee osteoarthritis feel about doing daily activities despite pain. Your answers will help doctors better understand and support Vietnamese-speaking patients.
Ho Chi Minh City, Ho Chi MinhAges 50 years+ - NCT07167732Recruiting
CTNNB1 Syndrome Natural History Study
This study follows people with CTNNB1 syndrome over time to better understand the condition. It does not test any new treatment—just collects information to help future research.
SydneyAges Any age - NCT07182968Recruiting
Turkish questionnaire for scleroderma patients
This study is adapting a questionnaire to measure how scleroderma affects your daily life. Your responses will help make the tool more useful for Turkish-speaking patients.
Çankaya, AnkaraAges 18 years+ - NCT07243132Recruiting
Long-term survivors in metastatic lung cancer study
This study looks at people who have lived more than three years with advanced lung cancer (non-small cell or small cell) that has spread. The goal is to better understand why some people do well for a long time and how to help more patients.
Aix-en-ProvenceAges 18 years+ - NCT07262632Recruiting
Cancer pain and AI assessment study
This study builds a database of videos and voice recordings from people with cancer, both with and without pain. The goal is to train artificial intelligence (AI) to automatically recognize pain, which could help doctors better manage it in the future.
Rotterdam, South HollandAges 18 years+ - NCT07286565Recruiting
Remote motor development study for early-diagnosed DMD or SMA
This study remotely tracks motor development in children with Duchenne muscular dystrophy or spinal muscular atrophy who were diagnosed at birth or before symptoms started. It aims to see if early monitoring helps improve long-term care and outcomes.
LiègeAges 4 months+ - NCT07344649Recruiting
Turkish validation of a breathing symptoms questionnaire in COPD
This study tests a Turkish version of a questionnaire that measures breathing-related symptoms in people with stable COPD. It aims to ensure the questionnaire is accurate and useful for Turkish-speaking patients.
IstanbulAges 18–75 - NCT07136909Recruiting
Testing a sleep apnea questionnaire for French children
This study is testing a French questionnaire (OSA-18) to see if it helps screen for sleep apnea in kids. It may lead to easier detection of breathing problems during sleep.
Bron, RhôneAges 4–17 - NCT06690151Recruiting
Babies with heart defects and development support
This study looks at how a serious heart condition before birth may affect a baby's brain development. It follows babies and their parents to better understand and support these children as they grow.
Nantes, Loire AtlantiqueAges Any age - NCT07378423Recruiting
Survey on signs of cancer at birth
This trial asks newly diagnosed children and young adults with certain types of cancer to fill out a questionnaire about signs of cancer present at birth. The answers may help improve early detection of childhood cancer.
BernAges Up to 21 years - NCT02576483Recruiting
Compare LASIK, SMILE, and PRK for eye prescription correction
This study compares three laser eye surgeries—LASIK, SMILE, and PRK—to see which works best for people who have similar eye prescription needs. You may be a good fit if you’ve never had vision-correcting surgery before and you meet the eye-health safety checks.
Palo Alto, CaliforniaAges 21–62 - NCT07399327Recruiting
SEEG thermocoagulation for hard-to-treat epilepsy
This study is looking at how well a procedure called SEEG thermocoagulation (a way to stop seizures by heating a small area of brain tissue) works for people with epilepsy that doesn't improve with medication. By joining, you will help doctors understand why this treatment works for some people and not others.
MarseilleAges 12 years+ - NCT07432789Recruiting
Testing a motion app for children with cerebral palsy
This study tests a smartphone app that measures how children with cerebral palsy move. It aims to see if the app can accurately track motor abilities, which could help doctors and families monitor progress more easily.
DijonAges 6–18 - NCT07432828Recruiting
Sleep problems and heart disease: a study link
This study looks at how sleep issues (like trouble sleeping or feeling very sleepy during the day) might be related to heart conditions. If you see a heart doctor, you can help by filling out a simple questionnaire about your sleep.
Carquefou, FranceAges 18 years+ - NCT07460154Recruiting
Structured review to improve COPD management
This trial tests a structured review process to help people with COPD who have needed multiple steroid pills in the past year. It aims to improve care and prevent future harm from the condition.
North ShieldsAges 35 years+ - NCT06059313Recruiting
Personality study for people with memory or behavior changes
This study looks at how personality may have changed before the onset of different types of memory or behavior disorders (like frontotemporal dementia, Alzheimer's, or bipolar disorder). Researchers will talk with a family member or close friend who knew you well before the illness started.
NantesAges 18 years+ - NCT07508553Recruiting
Bone density in third trimester: singleton vs. twin pregnancy
This study compares bone density in the third trimester between women pregnant with one baby versus twins. If you qualify, you'll fill out questionnaires and have a quick, non-invasive bone scan to help researchers understand how pregnancy affects bone health.
Roma, RMAges 30–45 - NCT07657845Recruiting
Long-term safety of a freezing nerve block before pectus surgery
This study checks the long-term safety of a procedure called cryoneurolysis, which uses cold to temporarily numb certain nerves before surgery to fix a sunken chest (pectus excavatum). It may be for people who already had this treatment.
Bergamo, BGAges 14 years+ - NCT07536685Enrolling by invitation
Turkish Body Awareness Questionnaire Study
This study tests a Turkish-language questionnaire that measures how aware people are of their body's position and sensations. Researchers are recruiting people with brain, nerve, or muscle problems to help develop and validate this assessment tool.
Kütahya, KütahyaAges 18 years+
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,163 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.