Children in the control group were received standard care of the clinic

Children in the intervention group received musical starry sky projector during the sleep time.

Children in intervention group received musical starry sky projector during their sleep time

The FIS is an instrument developed to measure fatigue levels by Borneman et al., 2007. A single-item scale was created to measure fatigue intensity, rated on a scale from 0 to 10, where 0 represents no fatigue and 10 represents severe, overwhelming fatigue. The scale demonstrates face and content validity, with strong concurrent validity when compared to the Revised Piper Fatigue Scale and robust criterion validity. The scale relies on self-reporting by the patient, allowing for an accurate reflection of their fatigue levels. This tool will be administered daily throughout the intervention to monitor changes in fatigue levels (Borneman et al., 2007).

The primary outcome of this study will be to assess sleep quality and fatigue levels in pediatric oncology patients. The VSS is a visual tool designed to assess sleep quality in pediatric patients. The scale is scored from 1 to 10, with a higher score indicating poorer sleep quality. This scale offers a straightforward and intuitive method for evaluating the patient's perception of their sleep, making it suitable for use in a clinical setting.

The PedsQL will be administered at two critical time points: at the baseline of the intervention and after one month. It is a validated tool for measuring health-related quality of life in children aged 2-18. It includes 23 items across four domains: physical health, emotional functioning, and social functioning, as defined by the World Health Organization. Additionally, it evaluates school functioning. The PedsQL provides three primary scores: Total Scale Score, Physical Health Summary Score, and Psychosocial Health Summary Score, derived from the emotional, social, and school functioning domains.