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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.