ObjectiveTo provide objective data for developing intervention measures against the suicide behaviors in college students by examining the current situation of the motivations and behaviors of suicide among college students and analyzing the risk factors.Methods Stratified multi-stage random sampling method was adopted for this study. Colleges and schools were randomly selected from all 21 monitoring districts within the whole province, including 30 vocational schools, 3 three-year term colleges, 4 four-year term colleges, and 2 five-year term colleges. A total number of 7 693 students aged from 18 to 24 were selected from these schools as the participants. They were asked to provide information relevant to suicidal ideation. The risk factors for suicide were screed out using univariate and multivariate logistic regression analyses.Results Of the 7 693 surveyed college students, the incidence of suicide ideation was 8.4% (642/7 687) in the past 12 months. Logistic regression models showed that: bullying, including single (OR=1.293,95%CI:1.019~1.642), and multiple ones (OR=1.366, 95%CI:1.052~1.774), self-harming (OR=2.452,95%CI:1.936~3.107), and drunk history (OR=1.252,95%CI:1.016~1.544) are main risk factors for suicide; whereas seeking help in face of problems (OR=0.038,95%CI:0.030~0.049) is a protective factor. Conclusion The suicidal ideation is not rare in college students in face of adverse events; proactive intervention measures should be developed based on the risk factors that lead to suicidal ideation.%目的了解在校大学生自杀意念和自杀行为的现况，分析其影响因素，为大学生自杀干预提供依据。方法通过多阶段分层随机整群抽样抽取广东省21个监测县(区)的学校，从中选择30所职校、3所三年制大学、4所四年制大学和2所五年制大学共7693名18~24岁的在校大学生为研究对象，开展调查，获得自杀意念的相关危险因素，并进行单因素和多因素Logistic回归分析，筛选自杀意念的危险因素。结果在调查的7693名广东省大学生中，在过去12个月内，自杀意念的发生率为8.4%(642/7687)。多因素Logistic回归模型显示：曾经受过欺辱，包括受过一种欺辱(OR=1.293，95%CI：1.019~1.642)和两种及以上欺辱(OR=1.366，95%CI：1.052~1.774)、伤害过自己(OR=2.452，95%CI：1.936~3.107)、醉酒史(OR=1.252，95%CI：1.016~1.544)是可能的危险因素，而遇到问题时会寻求帮助(OR=0.038，95%CI：0.030~0.049)是可能的保护因素。结论大学生自杀意念发生率较高，而遭遇负面事件是产生自杀意念的高危因素，应根据影响因素予以积极干预，防止自杀行为的发生。
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