Inclusion (PICO) criteria | Insufficient/missing information | ||
---|---|---|---|
All abstracts awaiting classification (n = 77) | Abstracts before 2008 (n = 43) | Abstracts since 2008 (n = 34) | |
Standardization of anaesthesia | 55 (71%) | 27 (63%) | 28 (82%) |
Age of participants | 43 (56%) | 26 (60%) | 17 (50%) |
Outcome details | 36 (47%) | 20 (47%) | 16 (47%) |
Time point of administration | 11 (14%) | 2 (5%) | 9 (26%) |
Study design (e.g. randomization) | 6 (8%) | 5 (12%) | 1 (3%) |
Number of insufficient/missing inclusion criteria per abstract | - | - | - |
 1 | 27 (35%) | 15 (35%) | 12 (35%) |
 2 | 27 (35%) | 17 (40%) | 10 (29%) |
 3 | 18 (23%) | 10 (23%) | 8 (24%) |
 4 | 5 (6%) | 1 (2%) | 4 (12%) |