Condition
Survey and Questionnaire clinical trials and research
As of November 12, 2026, Find a Trial lists 4 Survey and Questionnaire clinical trials that are recruiting, at sites in 4 countries (most in Portugal (2), Spain (2), Turkey (Türkiye) (1)). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 4Clinical trials
- 4Countries
Newest Survey and Questionnaire clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Types of persistent pain after hip or knee replacement | — | Østerbro, København Ø | Recruiting | Aug 7, 2025 |
| Evaluating PreveCol for Early Detection of Colorectal Cancer | — | Lisbon, Lisbon District and 1 other locations | Recruiting | Nov 25, 2024 |
| Preferences and experiences with colorectal cancer screening methods | — | Lisbon and 1 other locations | Recruiting | Nov 20, 2024 |
| Evaluating a Turkish digital health readiness questionnaire for chronic diseases | — | Istanbul, Istanbul | Recruiting | Sep 3, 2024 |
All recruiting trials (4)
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Types of persistent pain after hip or knee replacement
We will re-contact people who still have moderate-to-severe pain after hip or knee replacement to see whether their pain shows signs of nociceptive, neuropathic, or nociplastic mechanisms.
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Evaluating PreveCol for Early Detection of Colorectal Cancer
This study is testing a new blood test called PreveCol to see if it can help find colorectal cancer and advanced polyps in people aged 50-69 who have already had a positive stool test.
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Preferences and experiences with colorectal cancer screening methods
This test asks people aged 50–69 who completed a stool (FOBT) screen to share which colorectal cancer screening methods they prefer and how they experienced the screening program.
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Evaluating a Turkish digital health readiness questionnaire for chronic diseases
This study tests a Turkish survey to see how ready people with chronic diseases are to use digital health tools to manage their conditions.
Related topics
Quick answers
How many Survey and Questionnaire clinical trials are recruiting right now?
4, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 4 countries. The most sites are in Portugal (2 trials), Spain (2 trials), Turkey (Türkiye) (1 trial), Denmark (1 trial). Each study page lists its sites and which ones are recruiting.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.