Strategies for increasing recruitment to randomised controlled trials: systematic review.

PLoS Med · 2010 · PMC2976724 · PMID 21085696

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did not reach statistical significanceno p-value reported

The consent rate was higher in the video group when initially assessed (RR 1.75, 95% CI 1.11–2.74), but this did not reach statistical significance at 2 wk follow-up (not shown on Table 6 ).

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