P-Value Workshop

Brussels, 19 December 2025 

On 9 December, EORTC hosted the second P-value Workshop, and welcomed over 250 participants online from over 43 countries.

The workshop, marking 100 years of the 5% p-value cutoff, was a great opportunity to exchange views on how we define scientific evidence today. Discussions highlighted the continued relevance of p-values, while also emphasising the need to avoid relying on them in isolation.

Speakers and participants explored how decision-making in clinical research should be informed by a balanced assessment of benefits and risks, supported by reliable estimates, and how future guidelines could help shape a more nuanced and meaningful approach to evidence-based research.

The discussions were insightful and engaging. A big thank you to our speakers for their valuable contributions, and to everyone who joined and shared their perspectives. A full report will be shared in due course capturing the key insights from these conversations.