|  | Trial feature | Kruskal–Wallis | P | RCTs | Subgrouping (medians) |
---|---|---|---|---|---|---|
Recruitment rate | Trial characteristics | Trial size | X2(4) = 15.07 | 0.005 | 242 | 21 or fewer (0.83) |
22–34 participants (1.53) | ||||||
35–60 participants (2.50)* | ||||||
61–99 participants (1.7) | ||||||
100 ore more (1.62) | ||||||
Targeted impairment | X2(3) = 14.97 | 0.002 | 241 | Arm function (1.34) | ||
Leg function (1.84) | ||||||
Overall disability 2.16)* | ||||||
Cognitive or vision 0.95) | ||||||
Recruitment characteristics | Continent of recruitment | X2(2) = 24.21 | 0.001 | 283 | Europe (1.28) | |
Asia (2.68)* | ||||||
North America (1.35) | ||||||
Recruiters per site | X2(3) = 15.97 | 0.001 | 122 | One recruiter covering multiple sites (0.54) | ||
One recruiter per site (2.14)* | ||||||
Between one and two recruiters per site (1.5) | ||||||
More than two recruiters per site (1.9) |