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
- NCT07532954Recruiting
Peer Support Community for Neuroendocrine Cervical Cancer
This study tests whether joining an online support community helps patients with a rare type of cervical cancer called neuroendocrine cervical cancer (NECC) feel more supported and informed. You'll connect with others facing the same diagnosis through a secure digital platform.
Houston, TexasAges 18 years+ - NCT03941080Recruiting
Study gut bacteria changes in advanced colorectal cancer
This study looks at how gut bacteria (the microbiome) change during treatment for colorectal cancer that has spread or cannot be removed. Researchers hope the findings may help improve understanding of how treatment works and how to tailor care.
AssenAges 18 years+ - NCT06224764Recruiting
Study on very small premature babies after going home
This study looks at how very small premature babies (born early and weighing less than 4.4 pounds at discharge) do after they go home. It helps doctors understand what support families need.
PontoiseAges 1 month–11 years - NCT07518784Recruiting
Testing a new liver scanning device for fatty liver disease
This study tests a new device called LiverScope® that scans your liver to detect fatty liver disease (MASLD). The scan uses special imaging technology and may help doctors diagnose liver disease more quickly and accurately.
La Jolla, CaliforniaAges 18 years+ - NCT07518056Recruiting
Smartphone Use, Stress, Body Image and Food Habits Study
This research explores whether heavy smartphone use is linked to stress, how you feel about your body, and eating habits. Understanding these connections may help develop better support for students struggling with these issues.
Istanbul, beşiktaşAges 18–30 - NCT07519850Recruiting
How Perianal Disease Affects Sexual Health and Quality of Life
This study explores how chronic perianal conditions—like anal fistulas or pilonidal disease—affect patients' sexual function and relationships. Researchers will ask you to complete surveys about your symptoms and sexual health to better understand this impact and help future patients.
Thessaloniki, ThessalonikiAges 18 years+ - NCT07524218Recruiting
Meal Timing During Cancer Treatment Recovery
This study looks at how the timing of meals during cancer treatment recovery affects how well you tolerate and respond to your therapy. Researchers want to learn whether eating during certain hours of the day might help your body handle chemotherapy, targeted drugs, or immunotherapy better.
Los Angeles, CaliforniaAges 18 years+ - NCT06758648Recruiting
Eye blood vessels in Fabry disease
This study looks at the tiny blood vessels in the eyes of people with Fabry disease using a special camera. It may help doctors understand how the disease affects the eyes over time.
München, BavariaAges 18 years+ - NCT07510087Recruiting
Glaucoma and quality of life study
This study examines how glaucoma affects day-to-day life. It asks people with any type of glaucoma to complete a questionnaire about their quality of life.
Iowa City, IowaAges 18 years+ - NCT07512869Recruiting
Harm Reduction Support for Men Who Have Sex With Men in Bangkok
This study explores ways to support men who have sex with men (MSM) in Bangkok who use drugs during sexual activities, called 'chemsex.' Researchers want to understand how community leaders, healthcare workers, and police can work together to keep people safer and healthier.
Pathum Wan, BangkokAges 18 years+ - NCT07515638Recruiting
Immune System Study for Autoimmune Diseases
This research study collects samples and information from people with rheumatoid arthritis, lupus, or scleroderma, plus healthy volunteers, to better understand how the immune system works in these conditions. By comparing these groups, researchers hope to find new ways to treat and manage autoimmune diseases.
MontpellierAges 18 years+ - NCT07513064Recruiting
Healthcare providers' views on pregnant Muslim fasting
This study asks doctors and nurses about their experiences caring for pregnant women who choose to fast during Ramadan (a religious month). Researchers want to understand what healthcare providers know, believe, and do to keep these patients safe.
GizaAges Any age - 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 - NCT07516171Recruiting
Digital education tool for pain relief decisions in labor
This study tests a digital educational tool that helps first-time mothers make informed decisions about pain relief during labor, specifically about epidurals. It aims to prepare you for conversations with your healthcare provider so you feel more confident and ready.
Toronto, OntarioAges 18–55 - 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+ - NCT07506239Recruiting
Laser therapy for low-grade brain tumors in young people
This trial tests a laser treatment called LITT for low-grade glioma (a type of brain tumor) that has come back or is growing despite prior treatment. It aims to see if the laser is safe and effective in young people aged 2 to 25.
San Francisco, CaliforniaAges 2–25 - NCT07490379Recruiting
Home vs. Hospital Brain Stimulation for Depression
This trial compares doing transcranial direct current stimulation (tDCS) at home versus in the hospital to see if it works as well for depression. tDCS uses a mild electrical current on the scalp to help improve mood.
AngletAges 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+ - NCT06457945Recruiting
Mind-wandering and daydreaming in narcolepsy and hypersomnia
This study looks at whether people with narcolepsy or idiopathic hypersomnia have different patterns of daydreaming and mind-wandering compared to others with sleepiness but no clear diagnosis. It helps understand how certain brain states during sleep might affect waking thoughts.
LyonAges 18–65 - NCT06770621Recruiting
Glucagon response study in new type 1 diabetes
This study looks at how the body makes glucagon (a hormone that raises blood sugar) in children and teens with new type 1 diabetes. It aims to understand why some people may have dangerous low blood sugars, so doctors can better prevent them in the future.
Brussels, Woluwe-saint-lambertAges 2–30 - NCT07488364Recruiting
Understanding frailty in Parkinson's disease
This study looks at why some people with Parkinson's disease become physically frail. It aims to find factors that may help predict or prevent frailty.
Istanbul, TurkeyAges 40–85 - NCT07487844Recruiting
Electric field therapy for breast cancer that has spread
This trial tests a new way to treat breast cancer that has spread to the skin or just under the skin. It uses short electric pulses to target tumors without cutting. The goal is to see if this approach can safely destroy cancer cells in those spots.
San Francisco, CaliforniaAges 18 years+ - NCT07488351Recruiting
Self-kindness and confidence in Parkinson's: symptoms, function, quality of life
This study looks at how self-compassion and self-belief affect symptoms, daily function, and quality of life in people with Parkinson's disease. It aims to help researchers understand how emotional well-being relates to physical health.
Istanbul, TurkeyAges 40–85 - NCT06477042Recruiting
Act on quality of life in patients with aortic stenosis
This trial studies how a TAVI procedure affects the quality of life of people with aortic stenosis, especially those with multiple health conditions. It may help doctors understand how this treatment improves daily living for patients like you.
Clermont-FerrandAges 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.