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Table 7 Number of digital retention tools CTUs mentioned that had impressed them, broken down by category

From: Using digital tools in the recruitment and retention in randomised controlled trials: survey of UK Clinical Trial Units and a qualitative study

Retention tools

n (%)

SMS / email reminders

10 (67)

Study websites

0 (0)

Apps and web-based data collection

0 (0)

Social media

1 (7)

Other – in-house

4 (18)

  1. CTU Clinical Trials Unit