Table 1 Trial characteristics and reporting of flow diagrams
Proportion of trials with adequate flow diagram (%) | |
|---|---|
All trials | 240 of 570 (42%) |
Publication year | |
1981–1990 | 0 of 13 (0%) |
1991–2000 | 0 of 71 (0%) |
2001–2010 | 29 of 148 (20%) |
2011–2020 | 211 of 338 (62%) |
Continent | |
Europe | 86 of 229 (38%) |
Asia | 81 of 174 (47%) |
North America | 64 of 137 (47%) |
Australia | 5 of 14 (36%) |
Africa | 2 of 8 (25%) |
South America | 2 of 8 (25%) |
Type of surgery | |
TKA | 165 of 373 (44%) |
THA | 64 of 153 (42%) |
TKA and THA | 11 of 44 (25%) |
Trial size | |
0–50 | 44 of 176 (25%) |
51–100 | 109 of 252 (43%) |
101–150 | 40 of 72 (56%) |
151–200 | 25 of 38 (66%) |
201–250 | 11 of 16 (69%) |
> 250 | 11 of 17 (65%) |
Tested intervention | |
Regional blocks | 54 of 128 (42%) |
Local infiltration analgesia | 49 of 88 (56%) |
Neuraxial methods | 8 of 80 (10%) |
Systemic analgesia | 62 of 118 (53%) |
Multiple/mixed interventions | 67 of 156 (43%) |