Table 1 General characteristics of the 77 randomized controlled trials published July – December 2013
From: Handling missing data in RCTs; a review of the top medical journals
N (%) | |
|---|---|
Journal | |
BMJ | 8 (10) |
JAMA | 26 (34) |
Lancet | 22 (29) |
NEJM | 21 (27) |
Number of centers involved | |
Single | 21 (27) |
Multiple | 56 (73) |
Type of outcome | |
Quantitative | 42 (55) |
Binary | 35 (45) |
How often outcome was collected | |
Single | 16 (21) |
Repeated | 61 (79) |
How outcome was treated in the primary analysis | |
Single | 63 (82) |
Repeated | 14 (18) |
Reported CONSORT flow diagram | 76 (99) |
Reported primary analysis was intention-to-treat or modified intention-to-treat | 66 (86) |