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
- NCT07536672Enrolling by invitation
Understanding Pain and Sexual Health in Chronic Pain
This study helps develop a questionnaire (survey) that measures how chronic pain affects sexual health and relationships. If you have long-term pain and a stable relationship, your feedback could help doctors better understand and support patients like you.
Kütahya, KütahyaAges 18 years+ - NCT07515430Enrolling by invitation
Gut Bacteria and Cancer Symptoms in Children With Leukemia
This study looks at how the bacteria living in your child's gut may affect cancer-related symptoms (like nausea, fatigue, or pain) during leukemia treatment. Researchers will collect stool samples and track symptoms to understand this connection better.
Guangzhou, GuangdongAges 5–18 - NCT07477873Enrolling by invitation
Emotions and jaw surgery recovery study
This study looks at how patients feel emotionally and physically before and after jaw surgery. It uses special software and questionnaires to track emotions, and checks the jaw joint and muscles after surgery. The goal is to see how these relate to recovery in patients having planned jaw surgery.
Kaunas, KaunoAges 18 years+ - NCT07469345Enrolling by invitation
Teeth Grinding and Pelvic Pain in Young Men
This study looks at how teeth grinding (bruxism) is linked to pelvic pain, erectile function, and anxiety in young adult men. It aims to understand if these issues are connected, which could help develop better treatments.
KonyaAges 18–30 - NCT07463274Enrolling by invitation
Simulation training for managing numbing medicine toxicity in surgical residents
This trial tests a simulation training program to help surgical residents (non-anesthesiologists) recognize and manage a rare but serious reaction to numbing medicine called local anesthetic systemic toxicity. Participation involves a team practice session to improve emergency readiness.
KonyaAges 18–40 - NCT07437924Enrolling by invitation
Bruxism and pelvic floor health in young women
This study looks at whether teeth grinding (bruxism) is linked to pelvic floor muscle function in young women. If you are 18–30 and either grind your teeth or do not, you may help researchers understand this connection.
KonyaAges 18–30 - NCT07430878Enrolling by invitation
Sleep tracking study for insomnia patterns
This study uses your Withings smartwatch or sleep monitor to track sleep patterns over time. It looks for signs of insomnia and how your sleep changes from night to night.
Issy-les-MoulineauxAges 18 years+ - NCT07356180Enrolling by invitation
Physical Activity in Pregnancy Study
This study looks at physical activity during and after pregnancy for women who had a planned C-section. It may help understand how activity affects recovery for both mother and baby.
Baltimore, MarylandAges 18–45 - NCT07349966Enrolling by invitation
Biopsy effects on children born after genetic testing
This study compares children born after preimplantation genetic testing with a small biopsy of the embryo to those born without such testing. It aims to see if the biopsy affects a child's health and development during their first year of life.
Milan, MilanoAges Up to 5 years - NCT07339865Enrolling by invitation
Bladder symptoms study for teens moving to adult care
This study looks at how bladder problems, like frequent urination or leaks, affect teenagers and young adults as they switch from pediatric to adult doctors. The goal is to learn what helps you feel better and manage your health.
Ghent, East-FlandersAges 16–25 - NCT07326501Enrolling by invitation
Survey on AI use in medical research publishing
This study is a survey for lead researchers to share their views on using artificial intelligence in writing and reviewing scientific papers. It is not a treatment trial and does not involve any medical tests or procedures.
Nice, Alpes MaritimesAges Any age - NCT07297862Enrolling by invitation
Virtual reality sickness test for stroke survivors
This study compares stroke survivors and healthy people to see how virtual reality (VR) affects them, specifically looking at motion sickness symptoms. It may help understand if VR is safe to use after a stroke.
BoluAges 18–80 - NCT07140549Enrolling by invitation
Fertility preservation after childhood cancer treatment
This study surveys adults who had fertility preservation counseling and testicular tissue freezing before gonadotoxic treatment as children. It aims to learn about their experiences and long-term outcomes.
BrusselsAges 18 years+ - NCT07127692Enrolling by invitation
Medicines and muscle loss in older adults with falls
This study looks at whether certain medicines might make muscle loss and falls worse in older adults. If you are 65 or older, have been diagnosed with sarcopenia, and have fallen recently, this trial may help find out if your medications could be improved.
Gillingham, KentAges 65 years+ - NCT06958042Enrolling by invitation
Lung and bladder health study for COPD patients
This study looks at how common bladder problems are in people with stable COPD. It aims to help doctors better understand and manage these symptoms.
Kütahya, CenterAges 40–65 - NCT06912438Enrolling by invitation
Emotional release after dry needling for jaw and head pain
This study tests whether a dry needling technique (trigger point needling) can help release emotional tension and reduce pain from muscle knots in the head and neck. It may be a good option if you have jaw or headache pain related to muscle tightness.
Tel Aviv, IsraelAges 18 years+ - NCT06894927Enrolling by invitation
Hearing check for adults 50 and over
This trial offers a free hearing check for adults aged 50 and older. It aims to detect any hearing changes early and can help you understand your hearing health better.
Hradec Králové, Czech RepublicAges 50 years+ - NCT06819930Enrolling by invitation
Fibromyalgia fitness study for women aged 30-64
This study measures the functional capacity (daily movement and activity) of women with fibromyalgia compared to women without the condition. It helps understand how fibromyalgia affects physical fitness.
Barcelona, BarcelonaAges 30–64 - NCT06745817Enrolling by invitation
Nutrition study for women of childbearing age
This study looks at how well women in their reproductive years get enough nutrients from their diet. It will compare the nutrition of women who eat a regular diet, a vegetarian diet, or a vegan diet.
LjubljanaAges 20–49 - NCT06686875Enrolling by invitation
Chronic belly pain after sleeve gastrectomy study
This study looks at long-term belly pain in people who had a sleeve gastrectomy 3 months to 5 years ago. It aims to understand the pain better to help future patients.
WarsawAges 18 years+ - NCT06621420Enrolling by invitation
Peyronie's disease questionnaire Turkish validation study
This study is testing a Turkish version of a questionnaire for Peyronie's disease (a condition causing curved erections). It aims to see if the translated questionnaire works well for Turkish-speaking men, which could help doctors better understand their symptoms.
IstanbulAges 18–80 - NCT06605677Enrolling by invitation
Survey on doctors' knowledge of bloodstream infections and antibiotics
This trial is a survey that asks doctors about their knowledge, attitudes, and practices around bloodstream infections and antibiotic use. It helps researchers understand how doctors think and act so they can improve patient care.
Al Ain CityAges Any age - NCT06591182Enrolling by invitation
How social factors affect IV iron treatment
This study looks at how things like where you live or your income might affect how well IV iron treatments work. It is for people getting certain types of IV iron.
Tampa, FloridaAges 18 years+ - NCT06430918Enrolling by invitation
Nerve pain and sleep quality in knee osteoarthritis
This study looks at how nerve pain and sleep quality are related in people with knee osteoarthritis. It aims to help doctors better understand and treat pain.
IzmirAges 18–80
Hear when a new Questionnaire trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.