Clinical trials
Questionnaire clinical trials
Below are recruiting questionnaire clinical trials, each written for real people, not researchers. We’re tracking 1,134 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07402889Enrolling by invitation
Testing a physical activity questionnaire in Lithuanian adults
This study checks if a physical activity questionnaire works well in Lithuanian. It involves filling out forms and isn't a treatment trial.
KaunasAges 1.5 years+ - NCT06388811Recruiting
Turkish version of a knee pain questionnaire study
This study tests a Turkish questionnaire for early knee osteoarthritis. It may help doctors better identify and treat early knee pain.
IstanbulAges 18 years+ - 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 - NCT06703632Recruiting
Testing a new stool test for early colon cancer detection
This study is evaluating PreveCol, a new second-line stool test for people aged 50–69 who had a positive FIT/FOBT result and are already scheduled for a colonoscopy. It aims to find out if this test can help detect colorectal cancer earlier.
Lisbon, Lisbon DistrictAges 50–69 - 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+ - 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 - 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+ - 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+ - 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 - NCT07243236Recruiting
Do vaccine funding help more patients get shots?
This study looks at whether funding from the French National Health Insurance helps more people get recommended vaccines. It focuses on adults who need the pneumococcal vaccine and pregnant women who need the pertussis (whooping cough) vaccine.
Paris, IDFAges 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+ - NCT06918756Recruiting
Cough control questionnaire development study
This study is creating a new questionnaire to measure how well people can control their cough. It includes people with different types of cough and a small number of healthy volunteers.
LondonAges 18–100 - 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+ - 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 - NCT07156422Recruiting
Study of sensitive scalp in women without skin disease
This study is for women who have a sensitive scalp — feeling itchy, burning, or uncomfortable — but no scalp disease like psoriasis. Researchers want to understand what causes this sensitivity so they can help people like you.
BrestAges 18 years+ - 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 - 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+ - 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+ - 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+ - NCT07065266Enrolling by invitation
Pain survey for ACL knee surgery patients
This trial is testing a simplified pain questionnaire for people who are having ACL knee surgery. The goal is to see if this shorter questionnaire can effectively measure pain levels after surgery.
Redwood City, CaliforniaAges 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+ - 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+ - NCT06997354Recruiting
Parent survey to screen children for vision brain problems
This trial is testing a questionnaire for parents to help spot signs of vision problems in children that come from how the brain processes sight, not from the eyes themselves. It aims to make early detection easier for families and doctors.
Louvain-la-NeuveAges 3 years+ - NCT06994988Recruiting
Smart band-aid study for chronic pain in women
This trial tests a special band-aid that measures chronic pain. Women with chronic pain or healthy women may join to help researchers learn how this device works.
Chicago, IllinoisAges 18 years+
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Common questions
- Are there clinical trials for questionnaire?
- Yes. Clin2 currently lists 1,134 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.