The present study aimed to investigate the effect of SEI through VSNs on the sleep of cancer patients. The results showed that SEI based on VSNs could improve the sleep quality, insomnia in cancer patients. These findings were in line with the results found in the subsequent studies. Studies showed that the instructions of sleep health in the chemotherapy protocol had positive effects on the sleep and the patients' fatigue level[29, 30].
Peoples et al. indicated that sleep-related training improved insomnia in cancer survivors and decreased their depression[27]. The above studies showed that poor sleep in cancer patients could be improved with sleep training intervention.
In the present study, increasing information about non-pharmacological methods has led to improved sleep quality, insomnia and patients have paid more attention to the importance of sleep, insomnia complications, non-pharmacological strategies, and such points. Improving the quality of night sleep can reduce daily sleepiness and improve quality of life. Increasing awareness is effective in adopting healthy behaviors. Another possible reason for improved sleep quality, insomnia is the collaborative and comprehensive nature of the educational content that considers different aspects of sleep, and the role of nurses can be influential in this regard.
The findings showed that sleep quality got deteriorated in the control group. It can also be stated that other symptoms associated with insomnia, over time, exacerbate each other's defective cycle and lead to more negative effects on patients' sleep quality, which can have adverse effects on quality of life if appropriate measures are not taken. However, the results of other studies showed that newly diagnosed patients had more sleep problems due to new exposure to chemotherapy and anxiety of cancer diagnosis[31], which is inconsistent with the results of the present study.
In the present study, the improvement in sleep quality in the intervention group was stable until follow-up (one month after the intervention). In the study of Nakase-Richardson et al., the results were not sustainable in the follow-up process[32], which is inconsistent with the results of this study. Progressive improvement of sleep quality in the intervention group and the sustainability of the results can be considered the results of the supports provided for the patients in the form of follow-up, encouraging the patients, and dynamic communication with the patients.
Various studies have reported that nurses' training and support can improve health outcomes and empower patients in self-care and disease management[15.33.34]. Moreover, training with support and telephone follow-up is more effective than training alone[32]. However, the post-intervention sleep quality scores in the present study are still within the range of poor sleep quality; sleep quality improvement one month after the intervention and support is significant and considerable.
Various studies support the benefits of mobile-based interventions and distance learning in improving health outcomes in the health system[19, 35.36].
None of the conducted interventions on sleep in cancer patients focused on SEI through VSNs. Using social media in the present study made it possible to send health and supportive advice and dynamic communication with the patients on sleep in a multimedia manner, which can be regarded as the causes of the effectiveness of the intervention. Patients may forget the health education after face-to-face or telephone training, resulting in decreased training effectiveness over time.
While, another reason for the sustainability of the intervention is that the educational content, patients' questions, and the provided answers are stored on social networks, and patients can access them at any time and place and even long after the training.
In a review, Rathnayake et al. reported that medical health applications were a good source of education and support for family caregivers of people with dementia[37]. The findings of the Khairkhah and et. al study showed that face-to-face lymphedema self-management education was more effective than virtual education on patients' quality of life[38].
Cancer patients face many challenges and need continuous training and support to manage their conditions. Virtual learning can be considered as an appropriate and efficient method to train these patients. This method provides more flexibility for the patients who feel stressed in tedious treatment sessions and have limitations to attend training classes due to their physical conditions. The patients constantly receive information, and there is no interference with their treatment, rest, and living conditions. Reducing direct and indirect treatment costs, the number of visits to medical centers, and reducing the workload of medical staff are other advantages of this supportive training method.
Studies revealed the effectiveness of virtual learning on improving health outcomes in different issues, as consistent with the present study results, and the viability of using this technology in health promotion strategies[6, 19]. The results of a review showed that social media can be used by people and patients to increase knowledge and improve health outcome[39].
Cancer is one of the most critical challenges facing patients and healthcare professionals (HCPs) in the COVID-19 pandemic. Patients undergoing chemotherapy and survivors are more likely to be affected by adverse consequences due to weak immune system[21]. Therefore, considering the need for continuous training and support during the disease and especially cancer, as well as regarding the context of the COVID-19 pandemic, it is essential to choose the appropriate training method for these patients, and it is recommended to use the virtual space for training and meet these patients' needs in order to reduce the referral to high-risk places and medical centers.
In the follow-up process, there was a more significant difference between the two groups, and the intervention improved all sleep quality components, except the use of sleeping medication. It shows that training and support can lead to behavior change, but it needs more time to practice and stabilize health behaviors to make the right behaviors a habit. This finding was consistent with the results of Shafaat et al.'s study, which supports the effect of time on the effectiveness of training and behavior change [24].
The most remarkable improvement was observed in subjective sleep quality followed by sleep efficiency after the intervention. The component of the sleeping medication use increased in the control group while it decreased in the intervention group, although the differences were not statistically significant. Therefore, it is suggested to conduct further longitudinal studies with continuous courses of SEI. Based on the findings of this study, SEI via VSNs can be considered one of the effective methods for providing sleep supportive care to cancer patients.
This study was conducted in only one city and only consisted of patients with GIC receiving chemotherapy. Therefore, findings may not be generalizable to patients with other types of cancer and treatment. Further studies are needed to evaluate the effects of SEI via VSNs on the sleep quality of patients with different types of cancer in different societies and the management of other symptoms in cancer patients.
SEI using VSNs can be considered as an effective non-pharmacologic intervention to promote GIC patients' sleep quality. Accordingly, policymakers are suggested to develop this method, especially in the COVID-19 pandemic, to support highly vulnerable cancer patients. Nurses can extend their roles in supporting patients with cancer and take a helpful step toward increasing sleep quality among patients with sleep difficulties. Therefore, the development of such interventions is recommended.