Fig. 1From: Can we achieve better trial recruitment by presenting patient information through multimedia? Meta-analysis of ‘studies within a trial’ (SWATs)Primary outcome—randomised to host trial. Heterogeneity chi-squared = 3.72, p = 0.446; I.2 = 0.0%; test of pooled odds ratio = 1: z = 0.42, p = 0.671Back to article page