Considering the time and space constraints that impinge on applying health education in clinical settings, CD-based materials represent a valuable medium because they can be viewed repeatedly and are more cost-effective than nurseled health education. The use of digital and printed media also ensures the consistency of the content of materials for health education designed to improve patients’ self-care abilities and behaviours. In addition, due to the general low educational level of our study participants, the use of a CD may be more suitable for these patients compared with written information. Therefore, the use of electronic material should be promoted as long as patients have access to the technology.