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  • Title: The role of positive affect processes in the association between posttraumatic stress disorder symptoms and sleep: A multi-study design.
    Author: Messman BA, Jin L, Slavish DC, Alghraibeh AM, Aljomaa SS, Contractor AA.
    Journal: J Affect Disord; 2023 Mar 01; 324():511-520. PubMed ID: 36603602.
    Abstract:
    OBJECTIVES: Posttraumatic stress disorder (PTSD) symptoms have been linked to sleep disturbances. Limited work has explored how positive affect processes may account for this relationship. Advancing research in this area, we utilized a multi-study design to investigate the role of positive affect processes (levels of positive affect, positive emotionality, hedonic deficits, negative affect interference) in the PTSD-sleep association. METHODS: Data from 149 trauma-exposed firefighters (Mage = 38.93 ± 9.65, 5.40 % women) were collected between September 2021 and November 2021, and data from 119 trauma-exposed community members (Mage = 29.60 ± 8.67, 68.10 % women) were collected between February 2021 and December 2021. Participants completed an online survey on PTSD symptoms, sleep disturbances, and positive affect processes. RESULTS: Positive affect levels (b = 0.03, 95 % confidence interval [CI] [0.01, 0.06]; firefighter sample), positive emotionality (b = 0.07, CI [0.03, 0.13]; community sample), and negative affect interference (b = 0.06, CI [0.01, 0.14]; community sample) significantly accounted for the associations between PTSD symptom severity and sleep disturbances controlling for the effects of gender and age. CONCLUSION: Findings highlight the role of positive affect processes in the link between PTSD and sleep, and support addressing positive affect processes as potential targets in clinical interventions for co-occurring PTSD-sleep problems.
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