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
- NCT06260683Recruiting
Comparing tobacco vs. non-tobacco flavored e-cigarettes for quitting smoking
This study tests whether using e-cigarettes with a tobacco flavor or a non-tobacco flavor helps people who smoke switch away from regular cigarettes. Participants will use either e-cigarettes or nicotine replacement therapy for a period of time, and researchers will track their smoking behavior.
Columbus, OhioAges 21 years+ - NCT07393074Recruiting
Liver cancer and nervous system study
This study looks at how the nervous system works in people with liver cancer (hepatocellular carcinoma) or liver scarring (cirrhosis) who need a liver biopsy. It aims to see if there is a link between the nervous system and liver tumors.
LyonAges 18 years+ - NCT07389681Recruiting
Bone loss repair: Masquelet technique vs transport nails
This study compares two surgical techniques for rebuilding bone in the lower leg or thigh after significant bone loss. If you need this type of surgery, you may be able to join and help doctors learn which method works best.
BordeauxAges 18 years+ - NCT07380594Recruiting
Study of psychiatric symptoms in White-Sutton syndrome
This study looks at mental health symptoms in people with White-Sutton syndrome, a rare genetic condition. By answering questions, you can help doctors better understand what challenges people face and how to support them.
DijonAges 6 years+ - NCT05773274RecruitingPhase 2
Retreating with 177Lu-DOTATATE radiation versus usual treatment
This trial tests whether repeating a targeted radioactive treatment (177Lu-DOTATATE) works better than standard options in people with metastatic gastroenteropancreatic neuroendocrine tumors. It may help by controlling tumor growth after the first round of this therapy stops working.
Birmingham, AlabamaAges 18 years+ - NCT06985784Recruiting
Virtual reality for head and neck cancer patients and caregivers
This study tests whether using virtual reality can help reduce depression, anxiety, and pain in people with head and neck cancer and their caregivers. You and your caregiver may be able to use VR headsets together as part of your treatment.
Duarte, CaliforniaAges 18 years+ - NCT07332949Recruiting
Dialysis and its impact on sexuality
This study looks at how being on dialysis affects your sex life. It uses a questionnaire to understand your experiences and find ways to support you better.
Neuilly-sur-Seine, Île-de-France RegionAges 18 years+ - NCT04616313Recruiting
MRI and breathing tests in people who vape
This study uses a special lung scan (MRI) and breathing tests to understand how vaping affects lung structure and function. It may help researchers learn what early lung changes happen after starting vaping, even if you don’t feel sick.
London, OntarioAges 16 years+ - NCT06926062Recruiting
Improving HPV vaccine communication in pharmacies
This study looks at whether training pharmacy staff in communication and vaccination workflows can improve HPV vaccine recommendations and uptake. If you are a parent or guardian of a child aged 9–17 who has not yet completed the HPV vaccine series, you may be eligible to participate.
University Park, PennsylvaniaAges 18 years+ - NCT06306638RecruitingPhase 1/Phase 2
Light therapy after radiation for inoperable airway tumors
This trial tests a new light-activated therapy (interstitial photodynamic therapy) after palliative radiation to shrink inoperable airway tumors and improve breathing. It is for people with solid cancers that block the airway from the outside and cannot be removed with surgery.
Buffalo, New YorkAges 18 years+ - NCT06815510Recruiting
Complications after surgery in the recovery room
This study looks at how often complications happen in the recovery room after surgery. It aims to find out what factors might be linked to these complications, which could help improve care for future patients.
HararAges 18 years+ - NCT06816225Recruiting
Sleep and Baby Development in Early Childhood
This study looks at how sleep might be linked to a baby's development, like how they move and learn. Researchers will follow healthy babies born at term to see if sleep patterns affect their growth over time.
PortoAges 2–4 - NCT06816459RecruitingEarly Phase 1
Scent tests to find flavors in menthol cigarettes
This study tests if adult menthol cigarette smokers can identify different flavors by smell. You will complete a simple smell test and then try different cigarettes to see if you can tell flavors apart.
Buffalo, New YorkAges 21–55 - NCT03926403Recruiting
Hypnosis support for anxiety during face surgery
This trial looks at whether guided hypnosis can improve how people feel about having face surgery performed with numbing medicine (local anesthesia). If you’re experiencing significant anxiety beforehand, hypnosis support may help you feel more comfortable during your outpatient procedure.
AmiensAges 18 years+ - NCT06948656Recruiting
How low blood sugar affects muscle loss in cirrhosis
This study looks at whether low blood sugar (hypoglycemia) is linked to muscle loss (sarcopenia) in people with cirrhosis. It may help doctors better manage your health if you have this liver condition.
DijonAges 18 years+ - NCT07252583Recruiting
Sexuality and mental health in older adults
This study looks at how sexuality and mental health are connected in older adults. It involves a questionnaire about your experiences and feelings, with no treatments or medications.
Clermont-FerrandAges 60 years+ - NCT07736222Recruiting
Does chewing affect artery stiffness in healthy adults?
This study looks at how your oral health and chewing habits might relate to your artery stiffness—a measure of heart health. Researchers will test participants' chewing ability and check their arteries using simple, non-invasive methods.
Innsbruck, TyrolAges 18 years+ - NCT07234461Recruiting
Sexual well-being after mastectomy and reconstruction
This study looks at how mastectomy and breast reconstruction affect a woman's sexual well-being. If you are having a mastectomy for breast cancer or a preventive mastectomy because you are at high risk, you may be able to join.
Bari, ItalyAges 18 years+ - NCT05776082Recruiting
Study how healthy pregnancy heart risk affects outcomes
This study looks at how cardiovascular (heart and blood vessel) health during pregnancy is linked to pregnancy outcomes. It may help doctors better predict and improve outcomes by using information from routine prenatal care.
Hangzhou, ZhejiangAges 20–49 - NCT06543576RecruitingPhase 1/Phase 2
Radiation and drug therapy for stage IVB cervical cancer
This trial tests combining external and internal radiation with chemotherapy and immunotherapy for stage IVB cervical cancer that has not been treated before. The goal is to see if this approach can help shrink tumors and improve outcomes.
Los Angeles, CaliforniaAges 18 years+ - NCT07186764Recruiting
Quality of life in women with MRKH syndrome
This study tracks quality of life and follow-up care in women with Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome, a condition where the uterus and upper vagina are underdeveloped or absent. It compares their experiences to women without MRKH to improve care.
ToulouseAges 18–50 - NCT06813976RecruitingPhase 3
Chemotherapy after surgery for ampullary cancer
This trial compares two types of chemotherapy to see which works better after surgery for ampullary cancer. One treatment is a stronger combination (FOLFIRINOX), and the other is a single drug (capecitabine or gemcitabine). It is for people whose cancer was completely removed by surgery and who have no spread to other organs.
DijonAges 18 years+ - NCT07158229Recruiting
Long-term effects of NMDAR encephalitis
This study follows adults with NMDAR encephalitis over time to understand its long-term effects. It uses online questionnaires, so you need internet access at home.
BronAges 18 years+ - NCT05817591Recruiting
Testing how high-dose capsaicin affects nerve pain
This study looks at what “response profiles” different people have after treatment with high-concentration capsaicin for nerve-related pain. It may help doctors predict who benefits from capsaicin by measuring changes in symptoms and nerve sensitivity.
AnnecyAges 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.