We are inviting you to take part in a research study that aims to create a core outcome set that should be used in all research studies evaluating end-of-life care in critical care. Participation involved completing two online questionnaires with the option to receive an invitation to be part of a TEAMS video-conference consensus meeting.

We are inviting the following groups to take part:

• Family members of people of received end-of-life care in critical care
• Patients who were given a limited chance of survival whilst in critical care
• Health professionals who have been involved in end-of-life care in critical care
• Researchers who work in the field of critical care or end-of-life care

Following screening, each questionnaire will take approximately 30 minutes to complete, and it is very important that you can complete both questionnaires.

The first questionnaire is available now, and the second will be sent out in the next few weeks once the participants complete the surveys of the first round.

If you would like to know more information, please visit our study website where you will find the participant information sheets or go direct to start the questionnaire.

Thank you the PEACE-COS study team