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Table 5 An overview of the eight red flags identified in trial managers’ correct predictions of a failure to recruit to target

From: Estimating Site Performance (ESP): can trial managers predict recruitment success at trial sites? An exploratory study

  Red flag
1 Previous poor performance
2 Slow/non-standard approval process
3 Patient or staff preferences or beliefs
4 Target for recruitment
5 Problems with the trial protocol and/or its implementation
6 Lack of engagement of site team
7 Lack of research experience of site staff/staff changes
8 Busy site staff