Table 4 Frequency and percentage of trials in the gold standard set that were clearly identified as cluster randomized in the title or abstract, by year of publication.
Year of publication | Identified as CRT | Not identified | Total |
|---|---|---|---|
2000 | 4 (28.6%) | 10 (71.4%) | 14 |
2001 | 1 (6.3%) | 15 (93.8%) | 16 |
2002 | 1 (11.1%) | 8 (88.9%) | 9 |
2003 | 10 (52.6%) | 9 (47.4%) | 19 |
2004 | 8 (53.3%) | 7 (46.7%) | 15 |
2005 | 13 (65.0%) | 7 (35.0%) | 20 |
2006 | 30 (57.7%) | 22 (42.3%) | 52 |
2007 | 11 (64.7%) | 6 (35.3%) | 17 |
Total | 78 (48.1%) | 84 (51.9%) | 162 |