Table 1

Trial quality by decade of publication
Decade
 Quality score
 Total



1
 2
 3
 4
 5
1960s


2
2
1970s
5
3
 1
 9
1980s
 1
 11
 5
 7
 2
 26
1990s
5
3
8
2000s

1
1
 2
Total
 1
 21
 6
 15
 4
 47

Moore et al. Arthritis Research & Therapy 2008 10:R7   doi:10.1186/ar2355