| |
Gluud [17]
|
Kjaergard [16]
|
Current study
|
Kjaergard [18]
|
Bai [15]
|
Current study
|
|---|
|
Study period
|
1985-1997
|
1981-1998
|
1998
|
1964-2000
|
2006
|
2008
|
|
Included journals
|
the Journal of Hepatology
|
Hepatology
|
5 *
|
Gastroenterology
|
6*
|
5*
|
|
Number of RCTs
|
166
|
235
|
99
|
383
|
105
|
107
|
|
Sequence generation
|
47(28%)
|
121(51%)
|
35(35%)
|
161(42%)
|
85(81%)
|
81(76%)
|
|
Allocation concealment
|
22(13%)
|
80(34%)
|
25({25%)
|
149(39%)
|
64(61%)
|
62(58%)
|
|
Blinding
|
50(30%)
|
80(34%)
|
52(53%)
|
237(62%)
|
54(51%)
|
62(58%)
|
|
Sample size calculation
|
33(20%)
|
61(26%)
|
47(47%)
|
-
|
79(75%)
|
83(78%)
|
|
Incomplete outcome
|
-
|
165(70%)
|
34(34%)
|
-
|
-
|
52(49%)
|
|
Intention-to-treat analysis
|
95(57%)
|
-
|
42(42%)
|
-
|
-
|
74(69%)
|
|
Free of selective reporting
|
-
|
-
|
43(43%)
|
-
|
-
|
57(53%)
|
- *The current study included the five journals:American Journal of Gastroenterology, Gut, the Journal of Hepatology, Gastroenterology, Hepatology.
- * The study of Bai included six journals:Gastroenterology, Hepatology, Gut, Journal of Hepatology, American Journal of Gastroenterology,
- Clinical Gastroenterology and Hepatology
