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
- NCT06362083Recruiting
Urethral stricture surgery database study
This study collects information from patients who have had surgery for a urethral stricture, which is a narrowing in the tube that carries urine out of the body. Being part of this study helps doctors learn more about different surgical treatments and their outcomes.
Graz, StyriaAges 18 years+ - NCT04442516Recruiting
Testing kidney injury risk from cisplatin cancer treatment
This study looks at how cisplatin chemotherapy affects the kidneys. It may help doctors better predict and protect against kidney damage when patients start cisplatin.
London, OntarioAges 3 months+ - NCT06391671Recruiting
Stress and Weight in Teens: A Personalized Nutrition Study
This study looks at how stress and weight are linked in teenagers. It uses a blood test to find patterns that could lead to personalized nutrition advice. If you join, you'll help researchers understand how your body handles stress and food.
Ghent, Oost-VlaanderenAges 11–17 - NCT06297252Recruiting
Psychiatric disorders in pregnancy: a study at ultrasound
This study looks at how common psychiatric conditions (like depression or anxiety) are during pregnancy. It takes place when you come for your second trimester ultrasound and involves answering a few questions.
BéziersAges 18 years+ - NCT05727605Recruiting
Thinking changes after radiotherapy for brain and skull-base tumors
This trial studies how radiotherapy affects memory and thinking in adults with certain brain or skull-base tumors. It may help doctors understand who is most likely to have thinking changes and how to monitor or support patients.
GhentAges 18 years+ - NCT03323216Recruiting
Testing heart-related blood markers in people with diabetes and heart failure
This study looks for blood markers that may help explain or predict heart problems in people who have type 2 diabetes and heart failure. To join, you may also need to be having a planned heart procedure where doctors can collect study information.
Aachen, North Rhine-WestphaliaAges 18 years+ - NCT06084520Recruiting
Pain questionnaire study for opioid and non-opioid patients
This study tests two questionnaires for people with long-term pain. Researchers want to see if the tools work well for both those taking opioids and those who are not. Your answers can help improve pain care.
Uppsala, UpplandAges 18–75 - NCT06423222Recruiting
Anal incontinence and quality of life in Hungarian women
This study looks at how anal incontinence (leakage of gas, liquid, or solid stool) affects daily life and physical activity in Hungarian women. It also aims to validate a Hungarian version of a questionnaire used to measure these symptoms. If you have given birth and are a native Hungarian speaker, you may be able to help by sharing your experiences.
Pécs, BaranyaAges 18–50 - NCT07850830Recruiting
Virtual reality rehab survey for arm and shoulder conditions
This study asks people using virtual reality for arm or shoulder rehabilitation to answer questions about how they feel about it. Your responses help improve VR rehab for conditions like shoulder pain or stroke recovery.
CairoAges 20–50 - NCT07844694RecruitingPhase 1
Low-dose sirolimus for patients with RUNX1 platelet disorder
This trial tests whether a low dose of sirolimus, a drug that calms the immune system, can help improve blood counts and reduce bleeding risk in people with a genetic condition called RUNX1 familial platelet disorder. If it works, it might lower the chance of developing serious blood problems later.
Portland, OregonAges 18 years+ - NCT07850661Recruiting
Turkish questionnaire on confidence for physical activity
This study involves filling out a Turkish version of a questionnaire called the BARSE, which looks at how confident you feel about doing physical activity. It aims to see if the Turkish version is a reliable and valid tool.
Hatay, AntakyaAges 18–45 - NCT06345534Recruiting
Comparing two radiotherapy schedules for breast cancer
This trial compares two ways of giving radiation therapy after breast cancer surgery: FAST-FORWARD versus HAI5. It aims to find which schedule works best for people who need radiation to prevent the cancer from coming back.
GhentAges 18 years+ - NCT06443268Recruiting
Stroke and quality of life study with caregivers
This study looks at quality of life for people who have had a recent stroke or mini-stroke, and their caregivers. You and a close relative or friend both take part in interviews and surveys over time.
Zurich, Canton of ZurichAges 18 years+ - NCT04304846Recruiting
Follow-up program for very preterm babies at age 3
This trial is part of a regional follow-up program for babies born very early. It looks at how these “extremely preterm” children do as they grow, and can help the care team spot needs earlier at the age-3 visit.
AngersAges 3–6 - NCT07839546Recruiting
Following diabetes and obesity care guidelines
This study looks at how doctors in Greece follow recommended care for type 2 diabetes and obesity. It aims to improve patient care by understanding current practices.
ThessalonikiAges Any age - NCT07838285Recruiting
Why patients decline surgical research
This study looks at why some patients choose not to take part in surgical research. It aims to find ways to make it easier for patients to join future studies.
Al Mansurah, DakahliyaAges 18 years+ - NCT06257979Recruiting
Infection check during repeat rotator cuff surgery
This study looks for unexpected bacteria in the shoulder during repeat rotator cuff surgery. It aims to learn how often these hidden infections happen so doctors can better treat patients.
BeaumontAges 18 years+ - NCT07833280Recruiting
Pelvic pain, movement, sleep, and quality of life in women
This study looks at how chronic pelvic pain affects movement, sleep, and daily life in women. It may help find better ways to support women with this condition.
Kırşehir, MerkezAges 18–65 - NCT07831707Recruiting
Walking and attention study for people with one leg amputation
This study looks at how attention and surroundings affect walking in people with a lower leg amputation. It may help improve mobility and independence.
Richmond, VirginiaAges 18 years+ - NCT07828509Enrolling by invitation
Study on long-term problems with metal-ceramic crowns
This study looks at metal-ceramic crowns (tooth caps made with a metal base and ceramic coating) to see what problems might happen years after they are placed. If you have such a crown, you might be asked to have a check-up and fill out a questionnaire.
RigaAges 20–80 - NCT07832643Recruiting
Allergy and breathing problems in babies at 12 months
This study follows full-term babies from birth to 12 months to see if allergies affect breathing problems. It may help doctors understand and prevent respiratory issues in infants.
Amiens, PicardieAges Up to 1 year - NCT07829601Recruiting
Doctors' prevention habits study
This study looks at how doctors and medical residents prevent disease. If you are a doctor or medical resident, you can join and share your habits to help improve healthcare.
Clermont-FerrandAges Any age - NCT05546138Recruiting
Study for early diabetic nerve damage in people with diabetes
This trial looks for and studies early nerve problems in the feet or legs that can happen with diabetes, before nerve damage is clearly diagnosed. It may help doctors better predict who is at risk and understand early changes.
AalborgAges 18–60 - NCT07822815Enrolling by invitation
Experts agree on best ways to manage difficult airways in cancer patients
This study asks a panel of international experts to agree on the best ways to manage difficult airways in cancer patients. If you are a specialist with at least five years of experience caring for cancer patients with airway problems, your opinion could help shape future guidelines.
Delhi, National Capital Territory of DelhiAges 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.