Trends, Charts, and Maps
ClinicalTrials.gov currently lists 158,491 studies with locations in all 50 states and in 185 countries. ClinicalTrials.gov receives more than 98 million page views per month and 64,000 unique visitors daily (as of July 2013).
Contents
- Locations of Registered Studies
- Locations of Recruiting Studies
- Map of Studies Registered on ClinicalTrials.gov
- Types of Registered Studies
- Number of Registered Studies over Time
- Number of Registered Studies with Posted Results over Time
Locations of Registered Studies
This chart shows the distribution of locations for all studies registered on ClinicalTrials.gov.
Total N = 158,491 studies
Total N = 158,491 studies
(Data as of January 05, 2014)
Non-U.S. Only (44%) | |
U.S. Only (40%) | |
Not Specified (9%) | |
Both U.S. & Non-U.S. (6%) |
Location | Number of Registered Studies and Percentage of Total |
---|---|
Non-U.S. Only | 70,435 (44%) |
U.S. Only | 64,065 (40%) |
Not Specified* | 14,210 (9%) |
Both U.S. & Non-U.S. | 9,781 (6%) |
Total | 158,491 |
* Not Specified: The location of the study was not provided by the Sponsor.
(Data as of January 05, 2014)Locations of Recruiting Studies
This chart shows the distribution of locations for recruiting studies registered on ClinicalTrials.gov.
Total N = 31,642 studies
Total N = 31,642 studies
(Data as of January 05, 2014)
Non-U.S. Only (50%) | |
U.S. Only (44%) | |
Both U.S. & Non-U.S. (6%) |
Location | Number of Recruiting Studies and Percentage of Total |
---|---|
Non-U.S. Only | 15,905 (50%) |
U.S. Only | 13,784 (44%) |
Both U.S. & Non-U.S. | 1,953 (6%) |
Total | 31,642 |
Map of Studies Registered on ClinicalTrials.gov
See Studies on a Map for an interactive map of studies that are registered on ClinicalTrials.gov.
Types of Registered Studies
This table shows the number and types of studies that are registered and for which results are available on ClinicalTrials.gov.
(Data as of January 05, 2014)
Study and Intervention Type | Number of Registered Studies and Percentage of Total | Number of Studies With Posted Results and Percentage of Total*** | |
---|---|---|---|
Total | 158,491 | 10,900 | |
Interventional | 128,242 (80%) | 10,208 (93%) | |
Type of Intervention* | Drug or biologic | 84,392 | 8,645 |
Behavioral, other | 32,792 | 1,240 | |
Surgical procedure | 14,233 | 478 | |
Device** | 11,813 | 973 | |
Observational | 29,503 (18%) | 692 (6%) | |
Expanded Access | 227 | N/A |
* A study may include more than one type of intervention (that is, a single study may be counted more than once). Because of this, the sum of counts by type of intervention do not equal the total number of interventional studies.
** A total of 519 applicable device clinical trials were submitted as "delayed posting" under the Food and Drug Administration Amendments Act of 2007 (FDAAA). That is, the Responsible Party has indicated that such a trial includes a device not previously approved or cleared by the U.S. FDA for any use. These are not included in the count of trials with at least one device.
*** Results are only required to be submitted for certain trials. For example, results submission is generally not required for trials of drugs, biologics, or devices that have not been approved by FDA; observational studies; and trials completed before 2008.
** A total of 519 applicable device clinical trials were submitted as "delayed posting" under the Food and Drug Administration Amendments Act of 2007 (FDAAA). That is, the Responsible Party has indicated that such a trial includes a device not previously approved or cleared by the U.S. FDA for any use. These are not included in the count of trials with at least one device.
*** Results are only required to be submitted for certain trials. For example, results submission is generally not required for trials of drugs, biologics, or devices that have not been approved by FDA; observational studies; and trials completed before 2008.
N/A = not applicable
Number of Registered Studies Over Time
The graph below shows the total number of studies registered on ClinicalTrials.gov since 2000, based on the First Received Date. The first version of ClinicalTrials.gov was made available to the public on February 29, 2000.
(Data as of January 05, 2014)Key
ICMJE: Indicates when the International Committee of Medical Journal Editors began requiring trial registration as a condition of publication under the Uniform Requirements for Manuscripts Submitted to Biomedical Journals (URM) (September 2005).
FDAAA: Indicates when the expanded registration requirements of FDAAA began and were implemented on ClinicalTrials.gov (December 2007).
Year | Total Number of Registered Studies |
---|---|
2000 | 5,640 |
2001 | 6,991 |
2002 | 8,580 |
2003 | 10,246 |
2004 | 12,033 |
2005 | 24,956 |
2006 | 35,889 |
2007 | 49,290 |
2008 | 66,316 |
2009 | 83,489 |
2010 | 101,218 |
2011 | 119,425 |
2012 | 138,955 |
2013 | 158,437 |
Number of Registered Studies With Posted Results Over Time
The graph below shows the number of registered studies with results posted on ClinicalTrials.gov, based on the Results First Received Date. ClinicalTrials.gov launched its results database in September 2008, at which time sponsors or investigators were allowed to begin submitting results for their registered studies. The results database was developed to accommodate results submission requirements outlined in FDAAA.
(Data as of January 05, 2014)Year | Total Number of Registered Studies With Posted Results |
---|---|
2009 | 1,821 |
2010 | 3,524 |
2011 | 5,929 |
2012 | 8,751 |
2013 | 10,900 |
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