消极应对与母子依恋对中学生非自杀性自伤的影响及其交互作用

目的 了解消极应对与母子依恋对中学生非自杀性自伤(NSSI)的影响及其交互作用，为中学生非自杀性自伤合理化干预提供依据。方法 选取江西省内3所中学作为研究现场，采用自制调查问卷、中学生应对方式量表和亲子依恋量表对7129名中学生进行调查，并用SPSS 22.0对数据进行分析。结果 中学生NSSI检出率为33.7%（2403/7129），性别间差异有统计学意义（P<0.05)。与无NSSI组相比，NSSI组消极应对得分均较高（P均＜0.001）；与无NSSI组相比，NSSI组母子依恋得分均较低（P均＜0.001）。多因素非条件logistic回归分析显示，有消极应对和无母子依恋是NSSI的独立危险因素［OR有消极应对及95%CI为（1.05572，1.04862~1.06286），OR无母子依恋及95%CI为（1.02864，1.01473~1.04274），P均＜0.001］。消极应对与母子依恋的乘积交互项OR（95%CI）为0.99968（0.99931~1.00004），相加交互作用超额相对危险度(95%CI)、交互作用归因比(95%CI)、交互作用指数(95%CI)分别为0.0013（0.0009~0.0018），0.0012（0.0008~0.0017），1.01541（1.0129~1.0181）。结论 有消极应对和无母子依恋为中学生NSSI的独立危险因素，但两者间交互作用较弱。

The influence of negative coping and maternal-child attachment on non-suicidal self-injury and their interaction among middle school students

To understand the effect of negative coping and maternal － child attachment on non － suicidal self －injury ( NSSI) and their interaction among middle school students，and to provide a basis for rationalized intervention of NSSI among middle school students. Methods 7129 middle school students from 3 middle schools in Jiangxi Province were selected，and investigated by self － made questionnaires，middle school students＇ coping style scale and parent － child attachment scale. SPSS 22. 0 was used for data analysis. Ｒesults The detection rate of NSSI among middle school students was 33. 7% ( 2403 /7129) ，and the difference between the gender was statistically significant ( P ＜ 0. 05) . Compared with the non － NSSI group，the negative coping scores of the NSSI group were higher ( all P ＜ 0. 001) ，and the NSSI group had lower maternal attachment scores ( all P ＜ 0. 001) . Multivariate unconditional logistic regression analysis showed that negative coping ( OR = 1. 0557，95% CI: 1. 04862 ～ 1. 06286，P ＜ 0. 001) and no maternal attachment ( OR = 1. 02864，95% CI: 1. 01473 ～ 1. 04274，P ＜0. 001) were independent risk factors for NSSI. For middle school students，the product interaction term of negative coping and maternal attachment was 0. 99968 ( 95% CI: 0. 99931 ～ 1. 00004 ) . The additive interaction excess relative risk ratio，interaction attribution ratio and the interaction index were 0. 0013 ( 95% CI: 0. 0009 ～ 0. 0018) ，0. 0012 ( 95% CI: 0. 0008 ～0. 0017) ，1. 0155 ( 95% CI: 1. 0129 ～ 1. 0181 ) ，respectively. Conclusion Negative coping and no maternal － child attachment are independent risk factors for NSSI among middle school students，but the interaction between them is weak.