 Measures To determine whether the term breakthrough resulted in mistaken inference about its safety and effectiveness, all participants were asked to make a choice between a breakthrough drug or a drug that met the definition of breakthrough without the explicit use of the word breakthrough in the description If you had a potentially deadly medical condition and could choose between 2 drugs recently approved by FDA, which would you choose? 1 Axabex, a breakthrough drug newly approved by the FDA or 2 Hypapax, a drug that has shown some early promise in drug trials but which has not been shown to improve survival or disease-related symptoms. All participants were asked whether they had heard the term breakthrough drug prior to being asked the question. All participants also provided a written definition of a breakthrough drug. 