Cognitive Testing of Tobacco Use Measurement Items for Administration With Cancer Patients and Survivors

* INCLUSION CRITERIA: Patients with any prior confirmed cancer diagnosis being treated or followed at the Center for Cancer Research, Bethesda, Maryland, will be eligible. 3.1.1 Cancer patients with any disease site, stage, and extent of prior therapy will be eligible. 3.1.2 Patients age 21 years old and over will be eligible. The items are intended for use with an adult population, so we need to test with representatives of that population. 3.1.3 Additional eligibility criteria: * Individuals must be able to understand and willing to answer items about their own tobacco use. * Individuals must be able to read and speak English. For purposes of this study, we will limit participation to adults who can self-consent and self-report in English (vs. only being able to respond with the aid of a translator). The materials have been developed in English; this is intended to be cognitive testing of an English language questionnaire. (If a Spanish translation of the items will be developed in the future, a separate cognitive testing effort will be needed to ensure cultural equivalence of the items.) 3.1.4 Participants must be able to understand and be willing to sign a written informed consent document. All participants will be asked to provide explicit consent. 3.1.5 Participants are eligible whether they have never used tobacco products of any type, used any type of tobacco previously, or are current tobacco users of any type. (Participant recruitment will be designed to enroll a variety of patients with respect to tobacco use.) EXCLUSION CRITERIA: None. (Patients may have already begun protocol treatment.) INCLUSION OF WOMEN AND MINORITIES: Both men and women of all races and ethnic groups are eligible for participation in testing of the items. In fact, to the extent possible, we will try to include diversity of demographic characteristics (age, race, gender, education level).