Phase III studies compare the new treatment with the best treatment currently available. They often involve very large numbers of people, so that the results are statistically significant, because the reaction of people varies so widely to drugs and tests. Deciding whether to enter a clinical trial Every clinical trial is different. This is called ' informed consent '. Many trials are also monitored at a national or international level, and the funders and organisers of clinical trials usually liaise with each other to make sure that the best trials are performed on the optimum groups of patients.
Every person responds individually to treatments or tests.
If you take part in a trial, you might be one of the first people to receive a treatment or test or combination that might be proven subsequently to be very effective. However, you might also be one of the people who receives the existing 'standard' treatment or no treatment, depending on the type of trial. Taking part in a clinical trial or study is entirely voluntary - your wishes will be respected. If you decide not to enter the clinical trial or study, you will still be offered the best treatment and care for your illness that are available. If you have ANY questions or doubts or worries, please don't be afraid to ask for more time before making a decision.