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Table 1 Number of UK noncommercial trials registered and distribution by ClinGov and ISRCTN, 1990 to 2009

From: Registration of noncommercial randomised clinical trials: the feasibility of using trial registries to monitor the number of trials

Year

Number of UK trials registered

% registered with ClinGov

% registered with ISRCTN

1990

25

4

96

1991

10

0

100

1992

21

25

75

1993

42

16.7

83.2

1994

57

7.6

92.4

1995

132

7.6

92.4

1996

88

6.9

93.1

1997

132

8.3

91.7

1998

151

15.1

84.9

1999

188

8.5

91.5

2000

236

5.5

94.5

2001

265

13.6

86.4

2002

447

3.6

96.4

2003

533

8.3

91.7

2004

430

9.3

90.7

2005

458

13.5

86.5

2006

434

15.7

84.3

2007

291

31.3

68.7

2008

284

31.7

68.3

2009

334

35

65

Total

4,568

  
  1. ClinGov, US Clinical Trials Government Register; ISRCTN, International Standard Randomised Controlled Trial Number.