We then conducted a test/retest reliability study of the 215 of the 232 primary questions that have the preformatted, allowable response set of "Yes," "No," "Uncertain (Don't know, Maybe)," "Don't understand," and "I'd rather not answer, the 10 questions that have other response sets with one answer permitted, and the 5 questions with more than one response permitted. Email messages were sent via PatientSite (our patients' portal to their electronic medical record) to inform patients of the study and how to sign on to the informed consent form, and for those that had consented to the study to remind them to take interview for the first and then the second time.)