People, particularly undergraduate students, who report elevated symptoms of posttraumatic stress disorder (PTSD) are at elevated risk of binge drinking. The present study used ecological momentary assessment to (a) evaluate whether PTSD severity, specifically, or psychological distress, generally, are associated with binge drinking and (b) examine the self-medication and susceptibility models of the comorbidity of PTSD with binge drinking while accounting for shared liability (i.e., the between-person association of PTSD symptom severity with binge drinking). Within a larger study of undergraduate student mental health, for 14 days, students who reported a potentially traumatic experience (N = 276) reported nightly on use of alcohol and psychoactive substances and thrice daily on current affect, internalizing symptoms, and PTSD symptoms. Daily binge drinking, per the NIAAA definition, was analyzed using multivariate mixed effects, multilevel logistic regression. Results support the self-medication model; participants were more likely to binge drink on days marked by elevated PTSD symptoms, OR = 2.82, p < .01. Binge drinking was also more likely on weekends, OR = 4.21, p < .0001, and days marked by elevated daily positive affect, OR = 1.60, p < .001. Binge drinking was not associated with concurrent depressive or general anxiety symptoms (p > .30). PTSD symptoms were not associated with use of cannabis or other substances (p > .06). Regarding the susceptibility model, following a binge drinking episode, participants reported elevated depressive symptoms, B = 0.34, p = .04, but no change in affect, PTSD symptoms, or general anxiety symptoms (p > .16). Results suggest that, beyond understanding who is at risk for binge drinking, fluctuations in PTSD severity clarify when students engage in binge drinking. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

中文翻译：

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创伤后暴露学生中 PTSD 症状与酗酒的个体内关联。

报告创伤后应激障碍 (PTSD) 症状升高的人，尤其是本科生，酗酒的风险增加。本研究使用生态瞬时评估来（a）评估 PTSD 的严重程度，特别是心理困扰，一般来说，是否与暴饮暴食有关，以及（b）检查 PTSD 合并症的自我用药和易感性模型与暴饮暴食，而考虑共同责任（即，PTSD 症状严重程度与酗酒之间的关联）。在一项为期 14 天的本科生心理健康大型研究中，报告潜在创伤经历的学生 (N = 276) 每晚报告酒精和精神活性物质的使用情况，每天三次报告当前影响、内化症状和 PTSD 症状。根据 NIAAA 的定义，每日暴饮暴食使用多元混合效应、多级逻辑回归进行分析。结果支持自我用药模型；参与者更有可能在以 PTSD 症状升高为标志的日子酗酒，OR = 2.82，p < .01。周末酗酒的可能性也更大，OR = 4.21，p < .0001，以及以每日积极情绪升高为标志的日子，OR = 1.60，p < .001。酗酒与同时出现的抑郁或一般焦虑症状无关（p > .30）。PTSD 症状与使用大麻或其他物质无关（p > .06）。关于易感性模型，在暴饮暴食后，参与者报告抑郁症状升高，B = 0.34，p = .04，但情感、创伤后应激障碍症状或一般焦虑症状没有变化（p > .16）。结果表明，除了了解谁有酗酒的风险之外，PTSD 严重程度的波动澄清了学生何时酗酒。（PsycInfo 数据库记录 (c) 2021 APA，保留所有权利）。