The mediating role of psychological distress in the effect of positive psychological intervention on sleep quality among cancer patients undergoing radiotherapy: A randomized controlled trial

Key Points

• To examine the impact of positive psychological intervention on sleep quality, with a focus on psychological distress as a mediating factor.
• Conducted a randomized controlled trial over 4 weeks
• Evaluated psychological distress and sleep quality
• Focused on cancer patients undergoing radiotherapy
• Positive psychological intervention significantly improved psychological distress
• Improved sleep quality was observed among participants
• Psychological distress mediated the relationship between intervention and sleep quality