Data collection and analysis
Two data collection stages were employed. The first stage involved preliminary research to (1) explore potential problems in implementing the research tools, (2) test the feasibility of the research process, and (3) revise the research tools in accordance with our findings. Prior to testing, the multimedia video, health education leaflet, and questionnaire content were all finalized for expert validity. The second stage was a formal test. Statistical analysis of the collected data was conducted using SPSS 19.0 (IBM, Armonk, NY, USA). Descriptive statistics were used to analyze numbers, percentages, means, and standard deviations (SDs) in order to assess the participants’ comprehension of radiotherapy self-care. Inferential statistics, independent 