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
- NCT07730307Recruiting
Study on sharing suicidal thoughts and getting support
This study looks at how people share their experiences with suicidal thoughts or severe depression and what happens when they seek support. It aims to help understand the risks and benefits of talking about these struggles.
Mpunde, Buyende DistrictAges 18 years+ - NCT07723313RecruitingEarly Phase 1
Amniotic membrane and secretome for carpal tunnel release
This trial tests whether adding a special membrane (amniotic membrane) and a natural healing fluid (secretome) to standard carpal tunnel release surgery can improve hand function better than surgery alone. It may be a good option if your wrist pain and numbness haven't gone away with other treatments.
Denpasar, BaliAges 18 years+ - NCT07716254Recruiting
Dental cavity risk quiz study for Egyptian adults
This study tests a new questionnaire to see how well it can predict your risk of cavities. You will answer questions about your teeth and habits, and your answers will be compared with a dentist's exam.
Giza, Sixth of OctoberAges 18–65 - NCT06054542Recruiting
Digital eye strain questionnaire Turkish study
This study tests a Turkish version of a questionnaire about digital eye strain. It is for people aged 18–65 who use digital devices for at least two hours a day.
AntalyaAges 18–65 - NCT06639763Recruiting
Erectile aid use after gender-affirming surgery
This study looks at how transgender men and their partners use erectile aids after phalloplasty or metoidioplasty. It hopes to improve sexual health and satisfaction after surgery.
Ghent, East-FlandersAges 18 years+ - NCT07710105Recruiting
Ocrevus for MS: A Real-World Study
This study will follow people with multiple sclerosis (MS) who are starting or restarting a treatment called Ocrevus (ocrelizumab). The goal is to understand how well it works in real life over 12 months. Participants will receive Ocrevus as part of their usual care and complete surveys about their experience.
Chicago, IllinoisAges 18 years+ - NCT06639776Recruiting
Sexual function after erectile implant in transgender people
This study looks at how well erection prostheses (implants that help with erections) work for transgender people after phalloplasty surgery. It aims to understand sexual functioning for both you and your partner.
Ghent, East-FlandersAges 18 years+ - NCT06258382Recruiting
Fontan circulation and reproductive health study
This study looks at reproductive health in adults with Fontan circulation (a type of heart surgery) and their partners, using questionnaires. It aims to understand how this heart condition affects reproductive health and family life.
Lund, Skåne CountyAges 18 years+ - NCT07701733Recruiting
Lung cancer risk study for women who never smoked
This study looks at lung cancer risk in women who have never smoked. It aims to understand why some never-smokers develop lung cancer while others don't.
Basking Ridge, New JerseyAges 40–74 - NCT05889585Recruiting
Life after germ cell cancer treatment side effects study
This study looks at long-term health problems and quality of life in people who survived germ cell tumors after strong chemotherapy with a stem cell transplant or other standard treatments. It may help doctors understand which late side effects are most common and how to better support survivors.
VillejuifAges 18 years+ - NCT07696286Recruiting
Alexithymia in chronic pain patients with a spinal cord stimulator
This study looks at a condition called alexithymia (difficulty identifying and describing emotions) in people who have chronic pain and a spinal cord stimulator. It aims to help doctors better understand how emotions affect pain treatment.
IstanbulAges 18 years+ - NCT07692126Recruiting
Neck pain and hand strength: core vs shoulder exercises
This study compares two types of exercises to see which better improves hand grip strength and neck pain. If you have had chronic myofascial neck pain (trigger points) in the upper shoulder muscle for over 6 months, this trial may help find which exercise works best for you.
Giza, Giza GovernorateAges 25–45 - NCT07690579Recruiting
Prostate cancer disparities study
This study looks at how social, lifestyle, and other factors affect prostate cancer outcomes. It enrolls men who have chosen to have their prostate removed (radical prostatectomy) and agreed to join a biobank.
San Francisco, CaliforniaAges 18 years+ - NCT07681492Recruiting
Depression, aging, and antidepressants: a belief study
This trial studies how depression and antidepressants affect belief updating in older adults. You may join if you are over 65, have major depression, and are starting a new antidepressant. The goal is to learn more about how your brain adjusts beliefs over time.
RennesAges 65 years+ - NCT07685717RecruitingPhase 2
Pirtobrutinib for older adults with CLL
This trial tests a new pill, pirtobrutinib, for people 75 or older with chronic lymphocytic leukemia (CLL) who have never had treatment before. The goal is to see if it helps control the disease with manageable side effects.
Columbus, OhioAges 75 years+ - NCT07677631Recruiting
Emotional allodynia in fibromyalgia: a questionnaire study
This study compares how people with fibromyalgia and those with other long-term pain conditions experience emotional pain (like feeling hurt by emotions). You will fill out a questionnaire about emotional sensitivity. The goal is to see if emotional allodynia (pain from emotions) is more common in fibromyalgia.
BariAges 18 years+ - NCT07673562Recruiting
A simple test to detect heart failure early in adults over 55
This study tests a simple questionnaire and heart test to find hidden heart failure in people over 55. It aims to catch the condition early so treatment can start sooner.
Saint-Denis, ReunionAges 55 years+ - NCT07680270Enrolling by invitation
Measuring quality of life after heart procedures
This study measures how heart procedures affect quality of life for both patients and their caregivers, using simple questionnaires.
Clermont-FerrandAges Any age - NCT05625867Recruiting
After–ICU follow-up program to improve life quality
This study tests a structured follow-up consultation after a stay in an intensive care unit (ICU) to see whether it improves quality of life. You may be asked to join regular interdisciplinary visits after your ICU stay.
DijonAges 18 years+ - NCT07663890Recruiting
Exploring dissociative identity disorder
This study explores how dissociative identity disorder (DID) works. If you have DID and are seeing a therapist, you may help researchers learn more.
CarvinAges 18 years+ - NCT07666100Recruiting
Study of medication side effects in a periodontology clinic
This study looks at side effects from medications prescribed in a gum disease clinic. It aims to understand what types of side effects patients experience, which can help doctors choose safer medicines.
SivasAges 16 years+ - NCT07667686Recruiting
French version of recovery survey for psychiatric patients
This study tests a French version of a questionnaire called the Recovery Assessment Scale. It asks about your personal experience of recovery while receiving psychiatric care. Your answers may help improve mental health services.
Jury, MoselleAges 18 years+ - NCT07658326Recruiting
Stress and rotator cuff surgery study
This study looks at how stress before surgery might affect recovery in people having rotator cuff surgery. You may be able to join if this is your first surgery for a torn rotator cuff and you don't have certain other health problems.
CornebarrieuAges 18 years+ - NCT07662824Recruiting
Flyte device for bladder control after radiation therapy
This trial tests a device called Flyte to see if it can help improve urinary incontinence in women who have had radiation therapy for endometrial or cervical cancer. You might join if you've had bladder control problems since your treatment.
Rochester, MinnesotaAges 21 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.