Department of Health Promotion, School of Health, Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran.
Research Center for Health Sciences, Institute of Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
J Adolesc. 2023 Jul;95(5):1005-1016. doi: 10.1002/jad.12171. Epub 2023 Apr 3.
Nonsuicidal self-injury (NSSI) in adolescents is a growing public health concern, demanding preventive measures, particularly among high school students. Based on social cognitive theory (SCT), self-efficacy coupled with outcome expectations, social support, self-regulation, and behavioral intention, determine the likelihood of engaging in such a behavior. Thus, the present study was to investigate the effect of a SCT-based educational intervention on NSSI prevention in female high school students.
This randomized educational intervention trial was conducted on 191 female high school students, aged 15-17 years (15.95 ± 0.59) (viz. 99 individuals in intervention group and 92 controls). Intervention group attended five SCT-based educational intervention sessions concerning NSSI prevention. Data were then collected by three self-administered questionnaires. The first questionnaire was to measure demographic variables and the second one, intermediate outcome measure, was implemented to evaluate SCT constructs. The third questionnaire also measured NSSI (final outcome measure). Data were analyzed using SPSS software v.24.
After controlling the pretest scores, the repeated-measure multivariate analysis of covariance revealed a significant time and group interaction in multivariate (F = 154.8, p < .001) and univariate analysis, which is in favor of the effectiveness of educational intervention on changing the mean scores of NSSI and all SCT constructs. SCT constructs explained 41% of the variance in conforming intention for NSSI prevention (p < .001).
The study findings were in favor of effectiveness of an SCT-based educational intervention in intention of preventing NSSI.
青少年非自杀性自伤（NSSI）是一个日益严重的公共卫生问题，需要采取预防措施，尤其是在高中生中。基于社会认知理论（SCT），自我效能感加上结果预期、社会支持、自我调节和行为意向决定了进行这种行为的可能性。因此，本研究旨在调查基于 SCT 的教育干预对女高中生 NSSI 预防的影响。
这项随机教育干预试验在 191 名 15-17 岁（15.95±0.59）的女高中生中进行（即干预组 99 人，对照组 92 人）。干预组参加了五次基于 SCT 的预防 NSSI 的教育干预课程。然后通过三份自我管理问卷收集数据。第一份问卷用于测量人口统计学变量，第二份问卷用于评估 SCT 结构的中间结果测量，第三份问卷也用于测量 NSSI（最终结果测量）。使用 SPSS 软件 v.24 进行数据分析。
在控制了前测分数后，重复测量多元方差分析显示，时间和组的交互作用在多变量（F=154.8，p<0.001）和单变量分析中均具有统计学意义，这有利于教育干预在改变 NSSI 和所有 SCT 结构的平均分数方面的有效性。SCT 结构解释了 41%的 NSSI 预防遵从意向的方差（p<0.001）。
研究结果支持基于 SCT 的教育干预在预防 NSSI 意图方面的有效性。
