
Why people may not be eligible to join a trial
All trials have guidelines about who can take part. These are called eligibility criteria. Eligibility criteria are used to ensure that trials include the sort...
All trials have guidelines about who can take part. These are called eligibility criteria. Eligibility criteria are used to ensure that trials include the sort...
In some trials (especially Phase 1 and Phase 2 trials) everyone taking part will get the new treatment or intervention. (See 'Non-randomised trial designs and...