Department of Psychology and Education, University of Tehran, Tehran, Iran; Health Psychology and Behavior Medicine Research Group, Student Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Department of Psychology and Education, University of Tehran, Tehran, Iran.
Asian J Psychiatr. 2020 Jan;47:101856. doi: 10.1016/j.ajp.2019.101856. Epub 2019 Oct 24.
Suicide is increasing in young Iranian population, which necessitates the employing of valid, yet abridged instruments assessing the constellation of suicide-related behaviors. The study aimed at validating Suicide Behavior Questionnaire-Revised (SBQ-R) among Iranian undergraduates.
A total of 487 undergraduates were surveyed in 2018. Construct validity of SBQ-R was examined via confirmatory factor analysis (CFA), and Spearman's correlation with two single-item indices of suicide acceptability (SA) and lifetime suicidal ideation (LSI) was determined. Logistic regression and Kruskal-Wallis tests were used to examine the cut-off points (≥ 7 and ≥ 8) and categorizations as per item 1.
The mean SBQ-R score was 5.79 ± 3.55. Cut-off points ≥ 7 and ≥ 8 categorized 150 (30.8%) and 123 (25.2%) samples with suicide risk, respectively. Women obtained significantly higher scores on all indices, except items 1 and 4. CFA confirmed the model with sound goodness-of-fit, with factor loadings of 0.70 to 0.83. Composite reliability and average variance extracted were 0.87 and 0.63, respectively. The SBQ-R's correlation with SA and LSI confirmed its concurrent validity. Regression analysis confirmed the ability of both cut-off points to distinguish the participants with high SA and LSI; however, the cut-off point ≥ 8 produced better results regarding high LSI. Based on item 1, normal versus low- and high-risk samples were significantly different in terms of SA, LSI, and adjusted total score of SBQ-R (P < 0.0001).
SBQ-R is an economic and psychometrically sound tool, which can be utilized to identify suicide-related behaviors and risks in young Iranian population.
自杀在伊朗年轻人群体中呈上升趋势，这就需要使用有效的、但经过简化的工具来评估与自杀相关的行为。本研究旨在对伊朗大学生进行修订后的自杀行为问卷（SBQ-R）的验证。
2018 年共对 487 名大学生进行了调查。通过验证性因素分析（CFA）来检验 SBQ-R 的结构效度，并确定与自杀可接受性（SA）和终身自杀意念（LSI）的两个单项指标的 Spearman 相关性。采用逻辑回归和 Kruskal-Wallis 检验来确定（≥7 和≥8）的分界点以及根据第 1 项进行的分类。
SBQ-R 的平均得分为 5.79±3.55。分界点≥7 和≥8 将 150（30.8%）和 123（25.2%）个样本分类为具有自杀风险。除第 1 项和第 4 项外，女性在所有指标上的得分均显著更高。CFA 确认了具有良好拟合度的模型，因子负荷为 0.70 至 0.83。综合可靠性和平均方差提取分别为 0.87 和 0.63。SBQ-R 与 SA 和 LSI 的相关性证实了其同时效度。回归分析证实了两个分界点区分具有高 SA 和 LSI 的参与者的能力；然而，分界点≥8 在区分高 LSI 方面效果更好。根据第 1 项，SA、LSI 和 SBQ-R 的调整总分，正常与低危和高危样本在方面有显著差异（P<0.0001）。
SBQ-R 是一种经济且具有良好心理测量学特性的工具，可用于识别伊朗年轻人群体中的自杀相关行为和风险。
