University of South Dakota, 414 E Clark St, South Dakota Union Building, Vermillion, SD, 57069, USA.
Eat Weight Disord. 2020 Aug;25(4):1089-1097. doi: 10.1007/s40519-019-00741-5. Epub 2019 Jul 10.
Risk factors of negative affect, body dissatisfaction, distress tolerance, and negative urgency are independently associated with bulimia symptoms and non-suicidal self-injury (NSSI). However, relationships of these risk factors within comorbid presentations are not fully understood. The current study examined specific roles of these risk factors within this relationship.
An at-risk community sample of young adults (N = 429) completed an online survey of negative affect, body dissatisfaction, distress tolerance, negative urgency, bulimia symptoms, and NSSI.
A hypothesized path model was a good fit to the data. Results indicated direct paths from body dissatisfaction, negative urgency, and distress tolerance to bulimia symptoms. Negative urgency, distress tolerance, and bulimia symptoms were directly associated with NSSI. Consistent with hypotheses, distress tolerance and negative urgency acted as vulnerability factors, increasing the strength of associations between bulimia symptoms and NSSI. Distress tolerance also strengthened associations between negative urgency and NSSI. In addition to the direct effect, negative urgency was indirectly associated with NSSI via body dissatisfaction bulimia. Hypothesized indirect effects through distress tolerance were not supported.
Results support etiological models of bulimia and NSSI, and suggest deficits in emotion regulation strengthen risk of comorbid presentations. Furthermore, individuals with greater impulsivity and difficulty tolerating distress are at increased risk of engaging in both bulimia behaviors and NSSI, providing targets for clinical intervention.
Level V, cross-sectional descriptive study.
负性情绪、身体不满、痛苦耐受力和负性冲动等风险因素与暴食症症状和非自杀性自伤（NSSI）独立相关。然而，这些风险因素在共病表现中的关系尚不完全清楚。本研究旨在探讨这些风险因素在这种关系中的特定作用。
一项针对有风险的社区青年成年人（N=429）的在线调查，调查内容包括负性情绪、身体不满、痛苦耐受力、负性冲动、暴食症症状和 NSSI。
假设的路径模型与数据拟合良好。结果表明，身体不满、负性冲动和痛苦耐受力与暴食症症状呈直接关系。负性冲动、痛苦耐受力和暴食症症状与 NSSI 直接相关。与假设一致，痛苦耐受力和负性冲动作为脆弱因素，增加了暴食症症状与 NSSI 之间的关联强度。痛苦耐受力还增强了负性冲动与 NSSI 之间的关联。除了直接效应外，负性冲动还通过暴食症症状与 NSSI 存在间接关联。未支持通过痛苦耐受力的假设间接效应。
结果支持暴食症和 NSSI 的病因学模型，并表明情绪调节不足会增加共病表现的风险。此外，冲动性和难以忍受痛苦的个体更有可能同时出现暴食症行为和 NSSI，为临床干预提供了目标。
五级，横断面描述性研究。
