Clinical trials
Observational Chronic Pain trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
728 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2003 | 2 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 4 |
| 2007 | 5 |
| 2008 | 19 |
| 2009 | 13 |
| 2010 | 12 |
| 2011 | 14 |
| 2012 | 18 |
| 2013 | 16 |
| 2014 | 20 |
| 2015 | 27 |
| 2016 | 28 |
| 2017 | 21 |
| 2018 | 51 |
| 2019 | 39 |
| 2020 | 49 |
| 2021 | 68 |
| 2022 | 75 |
| 2023 | 67 |
| 2024 | 50 |
| 2025 | 52 |
| 2026 | 68 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 389 |
| Unknown status | 118 |
| Recruiting | 93 |
| Not yet recruiting | 49 |
| Active, not recruiting | 29 |
| Terminated | 24 |
| Enrolling by invitation | 11 |
| Withdrawn | 8 |
| Suspended | 7 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University Hospital, Clermont-Ferrand | 13 |
| Bogomolets National Medical University | 11 |
| Rigshospitalet, Denmark | 10 |
| Stanford University | 9 |
| Abbott Medical Devices | 7 |
| Hacettepe University | 7 |
| Kutahya Health Sciences University | 7 |
| Uppsala University | 7 |
| Children's Hospital Medical Center, Cincinnati | 6 |
| Salem Anaesthesia Pain Clinic | 6 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Chronic Pain | 728 |
| Pain | 88 |
| Neuralgia | 58 |
| Fibromyalgia | 49 |
| Postoperative Pain | 44 |
| Acute Pain | 31 |
| Musculoskeletal Pain | 28 |
| Anxiety Disorders | 26 |
| Low Back Pain | 25 |
| Agnosia | 24 |
Trials
Showing 76 to 100 of 728. Each trial links to its page on Pharma Observatory.
628 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.