What might keep me from wanting to be in the study?

Even when you are comfortable with the risks involved, you may have some practical concerns about participating in the study. For example, if the study involves travel or multiple visits, you may be concerned about needing time off from work, parking or transportation, and childcare. It is a good idea to explain your concerns when you first ask about the study, because the researcher may be able to help make arrangements for you. You should also ask about who will pay for any medical costs for tests or doctor visits that may not be paid for by the research study. You may need to check with your health insurance plan about your coverage before agreeing to participate.