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
- NCT00823654Recruiting
Blood tests during treatment to track ovarian egg supply
This study measures blood biomarkers to understand how breast cancer treatment affects a person’s future fertility (ovarian reserve). It may help patients learn more about egg supply changes after chemotherapy and hormone-related treatments.
Basking Ridge, New JerseyAges 18–44 - NCT01734122Recruiting
Focused radiation for essential or Parkinson tremor
This trial tests whether precisely targeted radiation to the brain can reduce tremors in people whose symptoms are not controlled enough by medication. It may help those who prefer radiation over deep brain surgery options.
Nashville, TennesseeAges 18 years+ - NCT01173341Enrolling by invitation
Checking heart side effects of breast cancer treatments
This study looks at how breast cancer medicines affect the heart. It may help doctors better prevent, spot early, and manage heart side effects from trastuzumab and/or anthracycline chemotherapy.
Philadelphia, PennsylvaniaAges 18 years+ - NCT02099734Recruiting
DNA registry for germ cell and testicular tumors
This study collects DNA and medical information to better understand germ cell and testicular tumors and possible inherited genetic causes. It may help researchers sort out how genetic changes relate to these cancers, even if you’re not receiving a new drug.
Basking Ridge, New JerseyAges 18 years+ - NCT07402200Recruiting
Indoor air pollutants and child health study
This study looks at how indoor air pollution affects children's health. It compares children with allergies or asthma to those without, to see if air quality plays a role.
MontpellierAges 8–12 - NCT07406867Recruiting
Can photos and bitewings detect gum disease?
This study tests whether photos, X-rays, and other non-invasive methods can identify gum disease as accurately as a clinical exam. It may help patients avoid needles or probing.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07408414Recruiting
Pain relief after laser pilonidal sinus treatment
This trial studies which local numbing method works best to reduce pain after laser treatment for pilonidal sinus. It may help people with this condition feel more comfortable after their procedure.
PožegaAges 18 years+ - NCT07409584Recruiting
Mental health and suicide risk in glioblastoma patients
This study looks at the mental health and thoughts of suicide in people with glioblastoma. It aims to understand these issues better so that patients can get the right support.
BerlinAges 18 years+ - NCT07410351Recruiting
Periodontal risk self-assessment for Saudi adults
This trial is creating a simple online tool to help you assess your risk for gum disease. If you join, you will answer a questionnaire and have a quick gum check at the same visit.
Abhā, 'Asir RegionAges 18 years+ - NCT07418775Recruiting
Meningioma Study: Genes, Health & Life
This study looks at how your tumor's genes, personal health habits, and other factors affect your long-term health after a meningioma diagnosis. You'll be asked to complete surveys about your health and experiences—no new treatments or procedures are involved.
San Francisco, CaliforniaAges 18 years+ - NCT07419451Recruiting
Bone health and health knowledge study for older adults
This study looks at how much older adults know about osteoporosis and their overall health understanding. It aims to help improve education and awareness about bone health in aging.
Balıkesir, BandırmaAges 65 years+ - NCT07429188Recruiting
Study of upper-limb assistive device users
This study looks at how well upper-limb assistive devices (like robotic arms) work for people who use them and for their caregivers. You and your caregiver can help by sharing your experiences in video interviews.
PerpignanAges 18 years+ - NCT07431359Recruiting
Mediterranean diet study for type 2 diabetes patients
This trial looks at what people with type 2 diabetes know about diet and how often they eat a Mediterranean diet. It aims to understand if this way of eating can help with diabetes management.
Peschiera del Garda, VeronaAges 18–80 - NCT07439276Recruiting
Social thinking in kids with neurodevelopmental disorders
This study looks at how children and teens with autism or ADHD understand social situations. It uses games and tasks to measure social thinking skills, which may help doctors better support these kids.
ParisAges 8–16 - NCT07443514Recruiting
Thinking and memory in people with DLBCL
This study looks at how thinking and memory may be affected in people newly diagnosed with a type of lymphoma called diffuse large B-cell lymphoma (DLBCL) who are about to start a common chemotherapy regimen known as R-CHOP. It also includes a comparison group of healthy relatives. The goal is to understand how treatment may affect cognitive function over time.
LjubljanaAges 18 years+ - NCT07446192Recruiting
Brain scan study for medication-resistant tremor
This study uses a special brain scan (MEG) to understand tremor that hasn't improved with at least two medications. It may help doctors find better treatments for people with essential tremor or similar conditions.
Gainesville, FloridaAges 50–84 - NCT07453524Recruiting
Understanding what matters to people with chronic pain
This study asks people with chronic pain about their preferences and experiences. Your answers will help doctors understand what matters most to patients like you.
BrusselsAges 18 years+ - NCT07456852RecruitingPhase 1/Phase 2
Can vasodilators help with chemo side effects in GI cancer?
This trial tests two drugs (isosorbide mononitrate and diltiazem) to see if they can prevent blood vessel damage caused by chemotherapy drugs like 5-FU or capecitabine in people with gastrointestinal cancers.
Rochester, MinnesotaAges 18 years+ - NCT07468864Recruiting
Turkish vertigo questionnaire study
This study tests a questionnaire for people who feel dizzy in certain visual or busy environments. It helps researchers see if the Turkish version of the test works well.
Bağcılar, GüneşliAges 18 years+ - NCT07468903Recruiting
Focal radiation for prostate cancer with HDR brachytherapy
This trial tests a targeted radiation treatment called HDR brachytherapy for prostate cancer that hasn't spread. It aims to treat only the cancer spots seen on MRI, which may reduce side effects.
Los Angeles, CaliforniaAges 40 years+ - NCT07474090Recruiting
Personalized Exercise Program for Breast Cancer Survivors
This study tests whether a personalized exercise program during chemotherapy helps breast cancer survivors recover better and feel stronger. You'll use a smartphone app to do guided workouts at home while getting support from exercise coaches.
Winston-Salem, North CarolinaAges 18–85 - NCT07596823Recruiting
Blood counts and nerve pain relief after a nerve block
This study looks at how blood cell counts change when you receive a nerve-blocking injection for neuropathic pain (nerve damage pain). Researchers want to understand if these blood changes can predict how well the injection will help your pain.
Ankara, CankayaAges 18 years+ - NCT07491484Recruiting
Physical function and quality of life in ALS patients
This trial measures how physical function affects daily life and well-being in people with ALS. It aims to understand how movement abilities impact patient-reported outcomes.
Salisbury, MarylandAges 18 years+ - NCT07505758Recruiting
Recovery after surgery in adults 80 and older
This study looks at how well adults aged 80 or older recover after planned surgery that requires an overnight hospital stay. The goal is to understand recovery using a simple questionnaire.
Barcelona, BarcelonaAges 80 years+
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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.