Trends, Charts, and Maps

ClinicalTrials.gov currently lists 249,047 studies with locations in all 50 States and in 201 countries.

As of February 2017, ClinicalTrials.gov receives an average of more than 199 million page views per month and 76,000 unique visitors daily.

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

The chart below shows the distribution of locations for all studies registered on ClinicalTrials.gov.

Percentage of Registered Studies by Location (as of July 06, 2017)
Total N = 249,047 studies

Distribution of locations for all studies registered on ClinicalTrials.gov"

Location	Number of Registered Studies and Percentage of Total (as of July 06, 2017)
Non-U.S. only	116,585 (47%)
U.S. only	89,488 (36%)
Not provided	29,255 (12%)
Both U.S. and non-U.S.	13,719 (6%)
Total	249,047

Locations of Recruiting Studies

The chart below shows the distribution of locations for recruiting studies registered on ClinicalTrials.gov.

Percentage of Recruiting Studies by Location (as of July 06, 2017)
Total N = 43,353 studies

Distribution of locations for recruiting studies registered on ClinicalTrials.gov

Location	Number of Recruiting Studies and Percentage of Total (as of July 06, 2017)
Non-U.S. only	24,531 (57%)
U.S. only	16,547 (38%)
Both U.S. and non-U.S.	2,275 (5%)
Total	43,353

Map of Studies Registered on ClinicalTrials.gov

The See Studies on Map page provides an interactive map of studies that are registered on ClinicalTrials.gov.

Types of Registered Studies

The table below shows the number and types of studies that are registered and have results available on ClinicalTrials.gov.

Study and intervention types with number of registered studies and with number of studies having posted results

Study and Intervention Type (as of July 06, 2017)		Number of Registered Studies and Percentage of Total	Number of Studies With Posted Results and Percentage of Total***
Total		249,047	27,289
Interventional		199,182 (79%)	25,564 (93%)
Type of Intervention*	Drug or biologic	119,682	20,502
	Behavioral, other	59,590	4,407
	Surgical procedure	21,424	1,382
	Device**	23,745	3,043
Observational		48,705 (19%)	1,725 (6%)
Expanded Access		437	N/A

* A study may include more than one type of intervention, meaning that 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 723 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 indicated that the trial includes a device not previously approved or cleared by the Food and Drug Administration (U.S. FDA) for any use. These trials are not included in the counts of trials with at least one device.
*** Results are required to be submitted only for certain studies. For example, results submission is generally not required for observational studies; trials completed before 2008; and trials that include drugs, biologics, or devices not previously approved by the U.S. FDA for any use. See FDAAA 801 Requirements for further information.

N/A = not applicable

Number of Registered Studies Over Time

The graph and table below show 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.

Key:

ICMJE: Indicates when the International Committee of Medical Journal Editors began requiring trial registration as a condition of publication (September 2005)

FDAAA: Indicates when the expanded registration requirements of FDAAA began and were implemented on ClinicalTrials.gov (December 2007)

Years with numbers of registered studies

Year	Total Number of Registered Studies (as of July 06, 2017)
2000	5,627
2001	6,973
2002	8,561
2003	10,223
2004	12,010
2005	24,907
2006	35,834
2007	49,221
2008	66,230
2009	83,381
2010	101,125
2011	119,368
2012	139,030
2013	159,551
2014	183,064
2015	207,294
2016	234,860
2017 (to date)	249,047

Number of Registered Studies With Posted Results Over Time

The graph and table below show 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 the results submission requirements outlined in FDAAA. See About the Results Database for more information.

Years with numbers of registered studies having posted results

Year	Total Number of Registered Studies With Posted Results (as of July 06, 2017)
2009	1,861
2010	3,612
2011	6,100
2012	9,140
2013	12,937
2014	16,986
2015	21,363
2016	25,640
2017 (to date)	27,289