What site teams can do:

There are obviously many logistical factors influencing this. But much of it can be addressed through simple conversations:

• Avoid framing early withdrawals as a "failure", and focus on the important contributions they have made during participation
• Asking if and how participants want to be contacted after a trial ends
• Explaining what types of communication are and aren't possible (and why)
• Keeping feedback channels open to explore what went well and what could be improved
• Putting channels in place to keep in touch about future opportunities