Research tools
To our knowledge, this topic has not been investigated in Taiwan; therefore, no preexisting scale could be appropriately used. The questionnaire was developed with reference to previous studies, the research purpose, expert advice, and the content of radiotherapy self-care education. The questionnaire items were divided into the following sections: (a) basic information (b), satisfaction with the radiotherapy self-care multimedia textbooks, (c) satisfaction with the radiotherapy self-care health education leaflet, (d) satisfaction with the health education of nursing educators, and (f) a radiotherapy self-care assessment.