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Supporting data for “Sleep and Arousal of Survivors of Chronic Childhood Trauma

posted on 2023-06-26, 01:34 authored by Sin Ying Albe Ng

To investigate the complex relationships among sleep, arousal, and dissociation in childhood trauma survivors, three studies were conducted using samples of community-dwelling adults in Hong Kong. 

Study 1 examined the differences in subjective sleep quality and sleep-related experiences among individuals exposed to short-term, chronic, and no childhood trauma, and evaluate if the chronicity of trauma altered the relationship between childhood trauma and sleep. Nine-hundred-and-fourteen adults completed an online survey on sleep, trauma-related symptoms, and psychological distress. 

Study 2 extracted the data from Study 1 and examined the factor structure and psychometric properties of the Chinese version of the Dissociative Experiences Measure, Oxford (HKC-DEMO). 

Study 3 examined the mediating role of arousal and the moderating role of dissociation in the relationship between childhood trauma and sleep. Fifty survivors of chronic childhood trauma and their age-and-gender-matched controls who reported no history of childhood trauma completed a week of sleep diary and an overnight portable polysomnography assessment. Heart rate variability and skin conductance level were also assessed at baseline and under distress to evaluate autonomic arousal. 


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