Nonsuicidal self-injury (NSSI) and suicidal behaviors are prevalent in individuals with eating disorders (EDs). Negative urgency (NU; the tendency to act rashly when distressed) is a common correlate of NSSI, suicide, and ED pathology. The aim of this study was to examine whether lifetime history of NSSI and suicide attempts (SA) contributed unique variance to current ED pathology after controlling for the variance accounted for by NU. Undergraduate students (N = 871; 25.4% male) self-reported lifetime SA and completed a modified Deliberate Self-Harm Inventory to assess lifetime NSSI, the Eating Disorder Examination-Questionnaire (EDE-Q), and the NU scale of the UPPS Impulsive Behavior Scale-Revised. Hierarchical regression analyses indicated that lifetime NSSI but not SA was associated with higher Global EDE-Q scores (NSSI: β = 0.11, p < .001; SA: β = 0.007, p > .05) and restrictive eating (NSSI: β = 0.10, p < .001; SA: β = 0.05, p > .05) after controlling for NU. In addition, lifetime NSSI (OR = 2.98, 95% CI = 1.54–5.76) and SA (OR = 5.68, 95% CI = 1.90–17.02) were significantly associated with past month purging but not binge eating after controlling for NU. Results suggest that NSSI is uniquely associated with increased likelihood of past month ED pathology in a nonclinical sample. Study limitations included low rates of behavioral problems in the sample and no measures of suicidal ideation. Clinicians who treat EDs should regularly assess NSSI and suicidal ideation.

非自杀性自残（NSSI）和自杀行为在饮食失调（ED）患者中普遍存在。负尿急（NU；在受苦时会轻举妄动的趋势）是NSSI，自杀和ED病理的常见关联。这项研究的目的是检查控制NU造成的差异后，NSSI和自杀未遂（SA）的终生史是否对当前ED病理造成了独特的差异。本科生（N = 871; 25.4％的男性自我报告了终生SA，并完成了经修改的“故意自我伤害”清单，以评估终生NSSI，饮食失调问卷（EDE-Q）和UPPS冲动行为量表修订版的NU量表。分层回归分析表明，一生的NSSI而非SA与较高的Global EDE-Q评分（NSSI：β= 0.11，p  <.001； SA：β= 0.007，p  > .05）和限制性饮食（NSSI：β= 0.10，p  <.001; SA：β= 0.05，p > .05），然后控制NU。此外，终生NSSI（OR = 2.98，95％CI = 1.54–5.76）和SA（OR = 5.68，95％CI = 1.90–17.02）与过去一个月的清除有显着相关，但在控制NU后没有暴饮暴食。结果表明，在非临床样本中，NSSI与上个月ED病理学可能性增加的唯一相关。研究的局限性包括样本中行为问题的发生率较低，并且没有自杀意念的测量方法。治疗ED的临床医生应定期评估NSSI和自杀意念。