Table 1 Distribution of ISRCTN records by trial end date
Trial end date | Total sample (n = 1933) n (%) | Reviewed sample (n = 625) n (%) | Number RCT not feasible (n = 27) n (%) |
|---|---|---|---|
1993 | 1 (0.1) | 0 (0) | 0 (0) |
1994 | 0 (0) | 0 (0) | 0 (0) |
1995 | 1 (0.1) | 1 (0.2) | 0 (0) |
1996 | 3 (0.2) | 0 (0) | 0 (0) |
1997 | 7 (0.4) | 1 (0.2) | 0 (0) |
1998 | 5 (0.3) | 2 (0.3) | 0 (0) |
1999 | 9 (0.5) | 2 (0.3) | 0 (0) |
2000 | 9 (0.5) | 3 (0.5) | 0 (0) |
2001 | 14 (0.7) | 4 (0.6) | 0 (0) |
2002 | 14 (0.7) | 1 (0.2) | 0 (0) |
2003 | 51 (2.6) | 11 (1.8) | 0 (0) |
2004 | 50 (2.6) | 14 (2.2) | 0 (0) |
2005 | 50 (2.6) | 14 (2.2) | 0 (0) |
2006 | 86 (4.4) | 19 (3.0) | 0 (0) |
2007 | 88 (4.6) | 22 (3.5) | 0 (0) |
2008 | 64 (3.3) | 21 (3.4) | 0 (0) |
2009 | 64 (3.3) | 19 (3.0) | 2 (7.4) |
2010 | 88 (4.6) | 20 (3.2) | 1 (3.7) |
2011 | 110 (5.7) | 33 (5.3) | 2 (7.4) |
2012 | 131 (6.8) | 32 (5.1) | 1 (3.7) |
2013 | 133 (6.9) | 37 (5.9) | 1 (3.7) |
2014 | 169 (8.7) | 52 (8.3) | 7 (25.9) |
2015 | 144 (7.4) | 46 (7.4) | 3 (11.1) |
2016 | 161 (8.3) | 61 (9.8) | 3 (11.1) |
2017 | 201 (10.4) | 85 (13.6) | 5 (18.5) |
2018 | 210 (10.9) | 97 (15.5) | 2 (7.4) |
2019 | 70 (3.6) | 28 (4.5) | 0 (0) |