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Table 6 Trial and recruitment characteristics that significantly affected recruitment rate for included stroke rehabilitation RCTs

From: A systematic review of the efficiency of recruitment to stroke rehabilitation randomised controlled trials

  

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)

  1. * Best recruitment condition
  2. Kruskal-wallis = appropriate statistics for Kruskal–Wallis test, p = significance level, RCTs = number of RCTs contributing to this finding