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
- NCT07306689Recruiting
PTSD after ectopic pregnancy
This study looks at whether people who have had an ectopic pregnancy (a pregnancy outside the womb) might experience posttraumatic stress disorder (PTSD). It aims to understand emotional impacts and may help improve care.
KrakowAges 18–45 - NCT03364803Recruiting
Sharing treatment results for people with Cushing’s syndrome
This is a study that collects and reviews information about how people with Cushing’s syndrome (including some mild forms and certain “silent” tumors) are diagnosed and treated, and what outcomes they have. It may help researchers understand which treatments work best in different types of the condition.
Basking Ridge, New JerseyAges 14 years+ - NCT02087852Recruiting
Kidney cancer DNA registry for patients and family
This study collects DNA from adults with kidney cancer (or suspected kidney cancer), plus DNA from some family members and healthy controls. It helps researchers understand whether certain genetic changes might be linked to kidney cancer risk.
Basking Ridge, New JerseyAges 18 years+ - NCT07504913Recruiting
Quality of life survey for stomach cancer patients after surgery
This study tests a new questionnaire to measure quality of life in people who had surgery to remove stomach cancer. If you had surgery for stomach cancer between 1 month and 5 years ago and are cancer-free now, your answers can help improve care.
Badalona, BarcelonaAges 18 years+ - NCT07132788Recruiting
How PAH affects muscle mass
This study looks at how pulmonary arterial hypertension (PAH) impacts lean muscle mass. It may help researchers understand changes in your body and find new ways to support your health.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06221020Recruiting
Enhanced recovery after pituitary tumor surgery
This study tests a standard care plan to help patients recover faster after surgery to remove a pituitary tumor. It may reduce hospital stay and improve recovery.
Kaohsiung CityAges 20–75 - NCT05448326Recruiting
Revisiting test results for children and adults without a diagnosis
This study re-checks earlier genetic testing for people who still do not have a diagnosis for a developmental or physical difference. It may offer new genetic testing (like genome sequencing) using new or stored samples to help find a cause when the first results were unclear or negative.
DijonAges Any age - NCT04428164Enrolling by invitation
Improving pain and sleep with non-drug hospital supports
This trial looks at non-medication ways to improve comfort (pain) and sleep for hospital patients. You may be asked to use study supports and complete short surveys.
Dallas, TexasAges 20 years+ - NCT07750561Enrolling by invitation
Turkish questionnaire for facial synkinesis
This study tests a Turkish version of a questionnaire that measures abnormal facial movements (synkinesis) that can happen after facial palsy. It aims to see if the questionnaire works well for Turkish-speaking patients.
Istanbul, CevizlibağAges Up to 18 years - NCT06683222Recruiting
How muscle and bone talk to each other in healthy women
This study looks at how signals from muscles affect bone health in women of different ages. It aims to understand why bone density changes over time.
MontpellierAges 20–89 - NCT06229158Recruiting
Sexual health needs in advanced cancer: a quality-of-life study
This study asks people with advanced cancer (and their partners) about their sexual health and quality of life. It aims to understand what needs are not being met and how to better support patients and their partners.
LyonAges 18 years+ - NCT05450354Recruiting
Study of related mental conditions after a child suicide attempt
This study looks at how other mental and emotional problems show up in children after a serious suicide attempt, and compares them with children after a less severe attempt. It aims to better understand what needs support in the hospital and afterward.
ParisAges 9 years+ - NCT07654504Recruiting
Turkish questionnaire study for brachial plexus birth palsy
This study tests a Turkish version of a questionnaire about how brachial plexus birth palsy (a nerve injury at birth affecting arm movement) impacts daily life. It may help people understand and communicate their symptoms better.
Istanbul, IstanbulAges 18 years+ - NCT03642795Recruiting
French questionnaire study for people with rheumatoid arthritis
This study checks whether a French questionnaire about rheumatoid arthritis care answers works well. You may help by completing the survey if you have rheumatoid arthritis and meet medication and consent requirements.
BordeauxAges 18 years+ - 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+ - NCT07653022Enrolling by invitation
Turkish symptom questionnaire for Turkish speakers with language barriers
This study tests a Turkish version of a questionnaire for Turkish-speaking patients who have psychological complaints but face language barriers. It aims to help doctors better understand their symptoms.
Jette, Brussels CapitalAges 18 years+ - NCT06576453Recruiting
Parenting program to prevent suicide risk in kids
This trial tests a 4-session program that teaches parents how to help prevent suicide risk in their children. It might help you feel more confident supporting your child.
Paris, Île-de-France RegionAges 18 years+ - NCT04158180Recruiting
Questionnaire study for diastasis recti in adult women
This trial is testing and verifying a Spanish questionnaire about diastasis recti (a separation in the abdominal muscles). It may help by creating a tool that doctors and researchers can use to better understand symptoms and severity.
Plasencia, CáceresAges 18–65 - 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+ - 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+ - NCT06933953Recruiting
French foot health questionnaire study
This study tests a French version of a foot health questionnaire. It aims to make sure the questions are clear and accurate for people receiving foot care.
AlençonAges 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+ - NCT06471842Recruiting
Eating issues in kids with metabolic diseases on special diets
This trial studies eating disorders in young children with certain inherited metabolic diseases that require a special diet. It aims to understand how often these eating problems happen and what they look like.
ParisAges 1–6 - NCT06348719Recruiting
Robot vs. standard laparoscopy for early endometrial cancer
This trial compares two types of minimally invasive surgery (robot-assisted vs. conventional laparoscopy) for removing the uterus in people with early-stage, low- to intermediate-risk endometrial cancer. The goal is to see which approach offers the best value and outcomes.
LilleAges 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.