Clinical trials
Completed Observational Pain trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
713 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 3 |
| 2001 | 5 |
| 2002 | 4 |
| 2003 | 5 |
| 2004 | 4 |
| 2005 | 11 |
| 2006 | 18 |
| 2007 | 21 |
| 2008 | 33 |
| 2009 | 21 |
| 2010 | 36 |
| 2011 | 29 |
| 2012 | 39 |
| 2013 | 20 |
| 2014 | 33 |
| 2015 | 32 |
| 2016 | 33 |
| 2017 | 36 |
| 2018 | 41 |
| 2019 | 40 |
| 2020 | 35 |
| 2021 | 38 |
| 2022 | 41 |
| 2023 | 45 |
| 2024 | 48 |
| 2025 | 20 |
| 2026 | 13 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 713 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Hacettepe University | 7 |
| Janssen Korea, Ltd., Korea | 7 |
| Rigshospitalet, Denmark | 7 |
| Children's Hospital Medical Center, Cincinnati | 6 |
| Oslo University Hospital | 6 |
| The University of Texas Health Science Center at San Antonio | 6 |
| University of Florida | 6 |
| Izmir Democracy University | 5 |
| Stanford University | 5 |
| University Hospital, Clermont-Ferrand | 5 |
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 |
|---|---|
| Pain | 713 |
| Chronic Pain | 55 |
| Postoperative Pain | 53 |
| Anxiety Disorders | 43 |
| Agnosia | 39 |
| Fatigue | 27 |
| Neuralgia | 20 |
| Fibromyalgia | 19 |
| Neoplasms | 17 |
| Low Back Pain | 16 |
Trials
Showing 1 to 25 of 713. Each trial links to its page on Pharma Observatory.
613 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.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.